In the 2004 Democratic primaries, Senator John Kerry of Massachusetts defeated several other candidates, effectively clinching the nomination on March 2. A Vietnam War veteran, Kerry had voted to authorize the Iraq War but had come to oppose it. The Bush campaign sought to define Kerry as a "flip-flopper" due to his vote on a bill funding the Afghanistan and Iraq wars. Kerry sought to convince Republican senator John McCain to become his running mate, but chose Senator John Edwards of North Carolina for the position after McCain rejected the offer. The election saw a major jump in turnout; while 105 million people had voted in 2000, 123 million people voted in 2004. Bush won 50.7% percent of the popular vote, making him the first individual to win a majority of the popular vote since 1988 United States presidential election,