In 2016, Clinton became the first woman in the History of the United States to be a major party presidential candidate. Clinton did not want to run for president in 2016, but after much of a majority support from the Democratic party, on April 12, 2015, speculation ended as Clinton formally announced her candidacy via email and the release of a video saying, "Everyday Americans need a champion. And I want to be that champion." In the polls, Clinton maintained her lead for the nomination although she faced several challenges from Senator Bernie Sanders. A NBC/Wall Street Journal poll conducted in May found Clinton and presumptive Republican nominee Donald Trump in a tie. Clinton and Trump were the least popular likely candidates in the poll's history. This made it difficult for her campaign.