A collaboration with Square allows campaign contributions directly from tweets.

A "donor-side consultant" helps the wealthy figure out which candidates to back.

Tonight, President Obama speaks to the non-profit group, Organizing, for America, which some have described as the president's never-ending campaign. Where is the money behind the organization coming from?

Revisiting the issue of money and its role in politics in this country.

Nonprofit social welfare organizations may become more potent political donors than super PACs. And they don't have to disclose who gave money.

Outside spending enabled by the Supreme Court's decision in Citizens United has accounted for $119 million in spending on the presidential race.