Wall Street is emerging as a particularly dominant funding source for Republicans and Democrats in the presidential election, early campaign-finance reports filed with the Federal Election Commission show. In the 2012 election, donations from the financial-services sector made up roughly 20% of the $845 million raised by super PACs, or political-action committees, and other independent campaign groups. In the 2004 election, Wall Street and other financial groups were responsible for just $2.4 million of the money collected by political-action committees.