The trading of political contributions between members of Congress goes on all the time – it doesn’t need an election. Leadership PACs of members of Congress have already collected $18 million in receipts and given $11.7 million to other members of Congress and federal candidates in 2013, a year before the November 2014 general election.

Leadership PACs of members of Congress have already received $17,951,929 in 2013, much of it from political action committees of companies, unions and other interest groups. So far in 2013, these Leadership PACs of members of Congress have given $7,251,335 to Republicans and $4,443,652 to Democrats. While many contributions are given to help with campaigns, some contributions are given to members of Congress who run in safe districts and really don’t need campaign help. But members of Congress have multiple reasons for contributing to each other, some based on friendship, committee assignment, state delegation, ideology, or support for similar positions on issues.

The leadership of both parties in the House and the Senate draw the largest receipts and usually lead in giving contributions. Here are the top ten leadership PACs giving to members of Congress and candidates in 2013.