http://www.politico.com/news/stories/0512/76554.html
Priorities USA Action is also trailing the pro-Romney group in cash reserves, even after the GOP group focused much of its money early on in knocking out primary opponents. The Democratic group reported having $4.7 million stockpiled at the end of last month, compared to Restore Our Future’s $8.2 million.
Another GOP super PAC powerhouse, American Crossroads, reported having more than $24 million in the bank at the end of March. The group is expected to release its April tally before Sunday’s deadline.
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American Crossroads contributors - OpenSecrets.org
American Crossroads Top Groups summary