The sister Crossroads organizations have been relatively quiet in the lead-up to this year’s midterm elections, and now we know why.

The pro-Republican super PAC and nonprofit groups, co-founded by strategist Karl Rove, experienced plummeting donations in 2013. After raking in $325 million in the 2012 cycle -- and failing to dislodge President Obama from the White House -- American Crossroads and Crossroads GPS together raised a little more than $6 million last year, according to a report in Politico, which got an early look at the numbers.

The super PAC has not yet filed its year-end fundraising report, which is due by midnight to the Federal Election Commission. Spokesman Jonathan Collegio did not immediately respond to a request for comment, but told Politico, “Our pledges are on track with previous cycles and we are increasingly enthusiastic about prospects for winning a majority in the Senate and holding the majority in the House.”

After largely staying out for the 2014 fray, there are signs that Crossroads is beginning to engage. This week, the super PAC announced it was spending $500,000 on ads and mailers in support of GOP congressional candidate David Jolly, who is running in a special election to fill the Florida seat of the late Republican Rep. Bill Young. The funds are part of a $1.2 million effort by independent pro-GOP groups, including the advocacy group American Action Network, which is also putting in $500,000.

AAN does not report its donors, but its sister super PAC, the Congressional Leadership Fund, raised nearly $1.1 million in 2013, according to a spokesman.

Democratic super PAC are having more luck attracting large early donations this cycle, a sharp contrast to the dynamic four years ago. House Majority PAC raised nearly $7.5 million last year, while Senate Majority PAC pulled in $7.46 million – including $2.5 million from former New York mayor Michael Bloomberg, $500,000 from attorneys David and Mary Boies and $200,000 from producer Jeffrey Katzenberg.