High-profile Hollywooders, as well as several sports, business and political luminaries, are offering up a string of last-minute, big-dollar contributions both Barack Obama and Mitt Romney. 
 
 Actors Jake Gyllenhaal, Zach Galifianakis, Renee Zellweger, Susan Saint James Ebersol and Amanda Seyfried are among the four-figure donors in recent days to Obama’s campaign, according to federal campaign finance disclosures. 
 
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 reset PHOTOS: Stars hit up the swing states Play Slideshow POLITICO’s late night roundup 
 
 Author Anne Rice, Disney TV Animation Executive Producer Dan Povenmire, and comedy writer Ian Maxtone-Graham are other notable Obama contributors. 
 
 For Romney, actor Kelsey Grammer, Denver Broncos executive John Elway and former game show host Bob Barker have made 11th hour, four-figure donations. 
 
 Sarah Palin’s political action committee, SARAH PAC, also chipped in $5,000 last week. 
 
 Heritage Foundation Executive Becky Dunlop, American Beverage Association Chief Executive Susan Neely, former Mike’s Hard Lemonade President Philip W. O’Neil, the political action committee of the Consumer Electronics Association and the congressional campaign of Rep. Frank Wolf (R-Va.) are among the recent donors of at least $1,000 to Romney’s campaign. ||||| Story highlights NEW : Santorum says he'll continue fight in home state, Pennsylvania, on April 24 
 
 : Santorum says he'll continue fight in home state, Pennsylvania, on April 24 Romney: "We won a great victory tonight " 
 
 Romney more than halfway to 1,144 delegates he needs for nomination, CNN estimates 
 
 Mitt Romney won all three of Tuesday's Republican presidential primaries, putting more distance between himself and his closest contender, Rick Santorum, who indicated he plans to fight on to his home state of Pennsylvania and beyond. 
 
 Romney's wins in Wisconsin, Maryland and the District of Columbia put him past the halfway mark to the 1,144 delegates needed to clinch the nomination and add to a wide delegate lead that he holds over the other major GOP presidential candidates, according to CNN estimates. 
 
 Yet Santorum indicated Tuesday night he would compete in the April 24 primaries in five states, including Pennsylvania, where his campaign hopes a win would be a gateway to a run of May primaries in states where he can capitalize on higher percentages of conservative voters. 
 
 Romney, in a speech to supporters in Milwaukee, made no mention of his GOP rivals and instead mostly contrasted himself with President Barack Obama. 
 
 "This has really been quite a night. We won a great victory tonight in our campaign to restore the promise of America," Romney said. 
 
 He continued his criticism of Obama's economic polices and what he repeatedly called Obama's plan for a "government centered society." 
 
 "There is a basic choice that we're going to face: The president has pledged to transform America, and he spent the last four years laying the foundation for a new government-centered society. I will spend the next four years rebuilding the foundation of an opportunity society led by free people and free enterprises." 
 
 The former Massachusetts governor is expected to take the majority of Wisconsin's 42 delegates and Maryland's 37 delegates, with some designated solely for the winner and the rest to be awarded proportionally. He will take all 16 delegates at stake in the District of Columbia. 
 
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 Counting partial allocations for Wisconsin and Maryland, and full allocations for D.C., Romney has collected 648 delegates since the primary and caucuses began in January, according to CNN estimates. That's more than twice the 264 delegates Santorum is estimated to hold. Gingrich and Paul trailed well back. 
 
 With 93% of the vote reported in Wisconsin, Romney had 42% and Santorum, a former U.S. senator from Pennsylvania, had 38%. U.S. Rep. Ron Paul of Texas had 12%, and former House Speaker Newt Gingrich had 6%. 
 
 In Maryland, with 75% of the vote reported, Romney had 49%. Santorum had 29%, Gingrich had 11% and Paul had 10%. 
 
 In the District of Columbia, with 99% of the vote reported, Romney had 70%. Paul had 12% and Gingrich had 11%. Santorum was not on the D.C. ballot. 
 
 Pre-primary polls appeared to show Wisconsin's contest was the only one Tuesday that Santorum had a chance to win. And analysts said Wisconsin might be Santorum's final chance to slow Romney's march toward the GOP nomination. 
 
 But Santorum told supporters in Mars, Pennsylvania, on Tuesday night that the race was essentially at halftime, with only roughly half the available delegates awarded. 
 
 "Pennsylvania and half the other people in this country have yet to be heard, and we're going to go out and campaign here and across this nation to make sure that their voices are heard in the next few months," Santorum said. 
 
 Santorum, who has touted himself as a more conservative candidate than Romney, also warned supporters that the Republican Party often has fielded moderate Republicans against incumbent Democratic presidents, only to see the moderate Republican lose. He appeared to raise Ronald Reagan, a conservative who defeated Jimmy Carter in 1980, as an example for a way forward. 
 
 "If we're going to win this race, we can't have little differences between our nominee and President Obama. We have to have clear, contrasting colors," Santorum said. "... Time and time again, the Republican establishment and aristocracy have shoved down the throats of the Republican Party and people across this country moderate Republicans because, of course, we have to win by getting people in the middle. There's one person who understood we don't win by moving to the middle. We win by getting people to the middle to move to us and move this country forward." 
 
 President Barack Obama, meanwhile, clinched the Democratic presidential nomination Tuesday with primary wins in Maryland, the District of Columbia and Wisconsin, CNN projected. Unlike the Republicans, Obama faces no serious opposition in his race. 
 
 According to CNN's delegate estimate, the president had 2,735 of the 2,778 delegates needed to secure his party's nod before Tuesday's contest. He is expected to win most or all of the 119 delegates at stake in Maryland and D.C., as well as the 100 delegates at stake in Wisconsin. 
 
 On the Republican side, since Romney's double-digit victory in Illinois two weeks ago -- followed by a wave of some of the Republican Party's major names and elder statesmen endorsing him and urging a quick conclusion to the divisive nomination battle -- the conversation seems to have changed: the GOP front-runner increasingly being called the inevitable nominee. 
 
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 Wisconsin exit polls show that endorsements might have helped Romney. About 60% of respondents said the Romney endorsements were a factor in their votes, and 33% called them an "important" factor. Most of those voters broke for Romney. 
 
 CNN Chief Political Correspondent Candy Crowley reported that Romney's campaign was prepared to spend "a lot of money and a lot of candidate time in Pennsylvania," where polls show Santorum's once-large lead has shrunk. 
 
 Santorum's campaign points toward May, which looks friendlier for him. He could be the favorite in primaries in North Carolina and West Virginia on May 8, Nebraska on May 15, Arkansas and Kentucky on May 22 and Texas a week later. 
 
 But it could be too little, too late by May. Sen. Hillary Clinton won most of the final contests against Sen. Barack Obama in the marathon 2008 Democratic presidential nomination battle. But in the end, it didn't matter. 
 
 And Ari Fleischer, a CNN contributor and former George W. Bush White House spokesman, said that while he believed that Santorum earned the right to fight through Pennsylvania, the race was all but over. 
 
 "I think the writing is on the wall. Does Rick Satorum want to read it is the question," Fleischer said. 
 
 Romney and Obama on Tuesday seemed to be turning their attention to November's general election, with Romney blasting the president during a campaign stop in Wisconsin and Obama mentioning Romney in a speech for the first time this year. 
 
 Speaking at a restaurant in Waukesha, Wisconsin, Romney suggested Obama wants to duck responsibility "for what's happened in this country," saying the president should get full credit or blame for "what's happened in this economy, and what's happened to gasoline prices under his watch." 
 
 "It is time to have somebody who will take responsibility, and if I am president, I will not only get things right again, I will take full responsibility for my errors and make sure that people understand we have a president in the White House again where the buck will stop at his desk," Romney said, while standing with House Budget Committee Chairman Paul Ryan, a prominent Wisconsinite who endorsed Romney. 
 
 Later Tuesday, Obama mentioned Romney while slamming a House-passed budget proposal that Ryan drew up and Romney embraced. 
 
 Obama, speaking at a media luncheon in Washington, said the plan, which would lower tax rates and cut spending while reforming the Medicare and Medicaid government-run health care programs, was "thinly veiled Social Darwinism" and "antithetical to our entire history as a land of opportunity and upward mobility for everyone who's willing to work for it." 
 
 "One of my political opponents, Gov. Romney, has said that he hoped a similar version of this plan from last year would be introduced on day one of his presidency," Obama said. "He said that he's very supportive of this new budget and he even called it marvelous, which is a word you don't often hear when it comes to describing a budget." 
 
 While Romney is far ahead of Santorum, Gingrich and Paul in the hunt for delegates, exit polls have indicated Romney still has a problem locking in the conservative base of the party. 
 
 That continues to fuel Santorum's campaign, in which he continually depicts himself as the lone true conservative going up against the Republican establishment and liberal media bias. 
 
 As in previous contests, Wisconsin's early exit polls showed Romney doing better among higher-earners and Santorum better with lower-income voters. Among exit-poll takers making $100,000 to $200,000 annually, Romney led 55%-30%, with Santorum winning the under-$30,000 voters, 44%-34%. 
 
 The Wisconsin exit polls showed Santorum is more popular in rural areas and Romney in urban areas in Wisconsin. According to the exit polls, Santorum was winning the rural vote, 37%-27%, and Romney was winning big-city voters, 43%-23%. 
 
 About 24% of the vote in Wisconsin came from urban areas and 22% from rural areas, according to the exit polls. The rest is suburban. 
 
 Wisconsin's primary was open to any registered voter in the state, regardless of party. Exit polls showed that 58% described themselves as Republicans, 30% said they were independent and 12% said they were Democrats. 
 
 Santorum was doing best among self-described Democrats with 32% of their vote, while Romney had 22% and Paul had 16%. ||||| Story highlights Video game lets players pit President Obama against Mitt Romney in hand-to-hand combat 
 
 Game due out Thursday for iPhone, iPad and iPods 
 
 App keeps track of "vote" totals worldwide to see who's winning 
 
 They call politics a blood sport, a battle royale, a bare-knuckle brawl. 
 
 But why use bare knuckles when you can smack your presidential rival with a microphone, light saber or red, white and blue Popsicle? 
 
 A new video game for iPad, iPhone and other Apple devices lets players do just that, with the help of President Barack Obama or rival Mitt Romney. 
 
 "Vote!!!" comes from Epic Games' Chair Entertainment, best known for revolutionizing the mobile gaming space with its console-style "Infinity Blade" franchise. 
 
 "Infinity Blade" games have generated nearly $50 million in revenue since launching in December 2010. 
 
 Creator: "My favorite [weapon] is the microphone, because when you hit your opponent with it, there's a feedback sound." 
 
 "Vote!!!" allows political junkies (and gamers alike) to pick a stylized cartoonish version of their preferred presidential candidate and then duke it out through multiple rounds. The game focuses on arcade-style fighting and encourages players to keep on swinging for more votes. 
 
 The game includes three 75-second rounds. The fight starts at a national debate and then moves to the White House lawn and concludes in the Oval Office. Before each round, players can customize their Democratic or Republican candidate with an outfit, a weapon and an accessory. In keeping with the humorous tone, everything about this game is over the top. 
 
 "We have some great outfits like an Uncle Sam costume, Apollo Creed-like boxing shorts, a super hero get-up and even '70s disco duds," said Donald Mustard, creative director and co-founder of Chair Entertainment. "Weapons are also on the fun side with things like an ice cream cone, a rocket pop, a Fourth of July sparkler and a Saber of Liberty, which is the handle of the Statue of Liberty with a light saber coming out. 
 
 "My favorite is the microphone, because when you hit your opponent with it, there's a feedback sound. Accessories include things like sunglasses, an eye patch, a baseball hat, a clown nose, an old powdered wig and a big, handlebar mustache." 
 
 As political pundits know all too well, the road to the White House is a long and arduous fight. This arcade game replicates that campaign by going "old school" and focusing on earning high scores with these bouts. Players are fighting for points, which, in turn, unlock votes. The votes come in tiers, so players earn one vote for a score of more than 10,000 points in a round, two votes for a score of more than 75,000 points in a round, and three votes by topping 250,000 points in a round. 
 
 Chair has married the gameplay with the vote counting and turned it into a globally connected experience. Using the same technology that allows thousands of players to connect in "Infinity Blade II's" ClashMobs multiplayer experience, "Vote!!!" keeps a running tally worldwide of who's collecting the most votes. 
 
 The fight starts at a national debate and then spills on to the White House lawn before concluding in the Oval Office. 
 
 "The game becomes more than just a single-player fight between Obama and Romney," Mustard said. "There's this cool metagame where millions of people around the country will be playing the game and earning votes. If you're actually voting for Obama, then you'll likely be playing as him in the game. So we'll have this running tally of who's winning the election, at least in terms of battling it out in this cool new game." 
 
 Using the same game mechanics of the "Infinity Blade" games, players will be able to rack up some seriously high scores through those additional weapons, accessories and costumes. During each round, players will have the ability to pull off a special move such as a back flip or kick flip to hit their opponent and literally knock a bunch of gold coins out of him. 
 
 "There's a lot of depth here as you're shifting between trying to rack up as many points as you can while not getting hit, but then collecting gold as fast as you can so that you can then get to the end of the round and can get a bunch of free hits on your rival and knock all the money out of him," Mustard said. 
 
 In keeping with the election theme, Chair has partnered with Rock the Vote to encourage gamers to vote in the 2012 election. 
 
 "It's our way of having a fun PSA built into the game that is relevant and fits in with the subject matter," Mustard said. "We want to encourage our younger voters to pay attention." 
 
 Bringing authenticity to the presidential candidates, Chair enlisted voice-alike actors to add humorous quips to the fighting game experience. Gamers who choose Obama might hear him say, "Oh, yeah. That's what Barack is cooking!" Upon winning a fight, Obama will do a little dance and say, "I'm gonna Barack your socks off!" Romney has lines such as "It's time to believe in America!" and "I've got a good feeling about this one!" 
 
 "We're keeping it all nonpartisan and safe but very funny," Mustard said. "It's not too heated. We're not getting into health care or issues like that. These lines spice up the gameplay and keeps things fun." 
 
 Making an election fun is no easy task. And it's also nice to have something for free, especially during a time when Democrats and Republicans are asking everyone for donations. "Vote!!!" isn't your typical free app. It runs on the same game engine that's responsible for some of the biggest game franchises of all time. And it brings to life a rich cartoon-style world of politics and deep fighting mechanics, offering a gameplay experience that can be played by veteran voters, and first-timers, alike. 
 
 "Vote!!!" is a free app and is due to be released Thursday.
– The stars are coming out in a big way as Election Day looms. The latest: Will Ferrell really, really wants you to vote—and he'll do anything to make sure you do, he promises in a new video for President Obama. "Hungry? How about a home-cooked meal? Hope you like angel hair pasta," he says. "You need a guy to help you move a couch? Done. I've even got my own van." But his promises get bigger—and weirder—from there. "If you vote, I'll eat anything you tell me to—garbage, hair, human toenails, underpants, whatever—I'll do it," he swears. The president's name stays out of it until the very end, when Ferrell concludes, while holding a football, "Vote Obama. It's a slam dunk." On Jimmy Kimmel's show last week, Chris Rock offered up a special message to white voters. "In times like these, you need a white president you can trust," Rock explains. "And that white president's name is Barack Obama." His evidence that Obama is actually white? The president used to be called "Barry," he likes to golf, he wears "mom jeans," and he has a Portugese water dog, among other things. Amy Poehler kept her endorsement brief and to the point: "If you can vote, go vote for Obama," she concludes. Obama himself is also urging voters to hit the polls ... and he's doing it cat-meme style. It's not just ads: Celebrities are making last-minute donations to both campaigns, Politico reports. Jake Gyllenhaal, Zach Galifianakis, Renee Zellweger, and Amanda Seyfried all recently made four-figure contributions to Obama's campaign, while Kelsey Grammer, Bob Barker, and John Elway did the same for Romney. Click here, here, or here to see previous celebrity endorsements.