Demonstrators march in the snow outside the White House during a rally against the Supreme Court's decision five years ago in favor of Citizens United, which allows private citizens and corporations to make unlimited donations for political campaigns.
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Harvard Law professor Lawrence Lessig lists Facebook's Sheryl Sandberg and former Daily Show host Jon Stewart as possible running mates among those from whom visitors to his website can choose.
Republican political operative Tyler Harber admitted in federal court to illegally coordinating between a campaign and superPAC. He was sentenced to two years in prison and two years' probation.
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A quick staff-up and a fast-paced money grab are common to both startups and campaigns. Here, staffers work at computers during a tour of President Obama's re-election headquarters in Chicago on May 12, 2010.
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David Barrows, of Washington, D.C., waves a flag with corporate logos and fake money during a rally against money in politics outside the Supreme Court in 2013.
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Former Florida Gov. Jeb Bush is one of four "un-candidates" being targeted by liberal groups Campaign Legal Center and Democracy 21. They say the politicians have crossed the line into candidacy based on their activities in recent months.
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Hillary Clinton speaks to the media after keynoting a Women's Empowerment Event at the United Nations on Tuesday in New York City. Clinton answered questions about recent allegations of an improperly used email account during her tenure as secretary of state.
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