|Rank||Name||Amount from lobbyist-bundlers||Total receipts|
|1||Democratic Senatorial Campaign Committee||$882,000||$13.7 million|
|2||Democratic Congressional Campaign Committee||$18,500||$22.6 million|
|3||National Republican Congressional Committee||N/A||$17.5 million|
|4||National Republican Senatorial Committee||N/A||$6.9 million|
Source: Center for Public Integrity analysis of Federal Election Commission filings. Total receipts reflect money raised between Jan. 1, 2013, and March 31, 2013.