After Democrats won control of the Senate and House of Representatives last year, so followed the money.

A new report by the Campaign Finance Institute surveyed the first nine months of contributions by Political Action Committees, known as PACs, and found that they gave 57 percent of their donations to Democrats, up from 43 percent in 2005.

While that’s a decent swing, it was not as big as the one when Democrats were swept from power in 1995, they saw a large drop to 37 percent of PAC contributions from 65 percent, according to the group’s analysis.

PACs represent all sorts of interest groups like labor unions and corporations who give thousands of dollars to lawmakers and candidates. They include companies like Anheuser Busch, whose giving to Democrats jumped to 63 percent from 35 percent, and the Wine and Spirits Wholesalers which jumped to 65 percent from 27 percent, the report said.

The CFI found that contributions from PACs to Republicans were in the mid-50 percentage range from 1997 to 2005 and that has flipped now. The group also said that there are fewer Democrats in Congress today than in the early 1990s so it was not unusual their share was not higher.

“Most of the PACs that contribute directly to candidates are looking at incremental policy changes,” said Michael Malbin, executive director of the CFI. “They need to maintain ties to policy makers from both parties, but especially the majority.”

The extra money could come in handy as Democrats try to expand their majorities in Congress. The map already favors Senate Democrats where they only have to defend 12 seats while Republicans must defend 22 seats next year.