A nasty primary battle between Romney and his GOP rivals took a financial toll on his presidential campaign, which raised $12.6 million in March and left Romney with about $10 million in the bank by month’s end. All told, Obama and the Democratic Party raised a combined $53 million in donations during that period, while Romney with his party pulled in about half of that.

Still, an anticipated fire hose of cash from major Republican “super” political committees and the Republican Party is likely to bring some financial parity to the general election, for which Romney only recently started collecting donations. Super PACs like American Crossroads and its nonprofit arm, Crossroads GPS, raised $100 million this election cycle, and the groups plan to flood the airwaves in coming months with ads critical of Obama…

Obama’s fundraising advantage puts him at a less-than-solid position when compared with the tens of millions of dollars the sister Crossroads groups have amassed so far. During the last six months of 2011 alone, GPS brought in $28 million from only a few dozen major donors, recent tax filings show. Crossroads has said it plans to raise more than $300 million to beat Obama.