(NBC) -- On a break from the campaign trail Monday Mitt Romney went shopping for groceries and some friendly photo coverage, a mellow visual to mask intense shopping for something both he and the president need more than food: Campaign cash.
This is expected to be the most expensive campaign in U.S. history.
President Obama set the record, taking in $750 million in 2008.
Most of that came from small donors, but in 2010 the Supreme Court changed the rules, allowing big groups like Crossroads GPS (run by Republican Karl Rove) and Priorities USA Action (run by a former Obama staffer) to pump unlimited funds into the campaigns.
Most of it is going for TV attack ads.
Team Romney is winning the fundraising fight, taking in more than $100 million last month, to Team Obama's $70 million, but Democrats are spending more at the moment in swing states from Florida to Nevada, New Hampshire to Virginia, figuring many voters still aren't sure about the GOP candidate.