Money plays a big role in the elections. Each month, political pundits track fundraising and spending by the political parties, the campaigns and the political action committees, or PACs.A lot of those dollars are coming from some big-money names. But who are they? So far, one of the pro-Mitt Romney PACs, Restore Our Future, has made inroads with many of the nation's billionaires, while one of the pro-President Barack Obama PACs, Priorities USA Action, has enjoyed a lot of support from Hollywood celebrities.With the election in November, here's a look at some of the biggest donors so far.In July, Morgan Freeman reportedly gave $1 million to the pro-Obama super PAC, Priorities USA Action.By some estimates, Freeman has a net worth of about $90 million.Comedian Bill Maher cracks a lot of political jokes on his HBO show, "Real Time with Bill Maher." But this year, the funnyman decided to put his money where his mouth is by giving $1 million to a pro-Obama super PAC, Priorities USA Action.When it comes to conservative billionaires spreading money around in political circles, the Koch brothers (David and Charles) get most of the scrutiny. But so far, it's been William Koch who's given the biggest boost to the Romney campaign, delivering $2 million to restore the future.