He hammered Santorum on the airwaves in Illinois: 

Santorum’s campaign and super PAC have been outspent by a margin of 7 to 1 in the Illinois primary, with forces supporting Mitt Romney shelling out a total of about $3.7 million on the airwaves, according to a GOP media-buying source. … The gulf was even more enormous in the crucial, expensive Chicago media market. There, Romney’s campaign spent $710,158 and his super PAC spent $1,367,125. The only pro-Santorum spending was $97,119 from the campaign, the same source said. That amounts to a spending disparity of 21 to 1 in Romney’s favor.

A quick look at spending in upcoming states, via First Read

Louisiana: Restore Our Future $612,000, Red White and Blue Fund $244,000, Winning Freedom $50,000, Santorum $32,000, Winning Our Future $2,900
Wisconsin
: Restore Our Future $1.3 million, Santorum campaign $39,000

Meanwhile, as the ACA heads to Court, the RNC ramps up its healthcare attack in six key states: 

Devin Dwyer has more

The RNC accurately notes that the “change” Obama promised on health care premiums has not yet come come about as his first term draws to a close. Annual premiums for a family health plan rose 9 percent, or $1,300, last year, topping $15,000 for the first time ever, according to the nonpartisan Kaiser Family Foundation and Health Research and Educational Trust. The annual increase was triple the rise from 2010. The study also found that up to 2 percent of the higher premiums were because of the Affordable Care Act’s provisions, such as allowing parents to keep young adult children on their policies up to age 26. … 

Obama’s campaign aides insist immediate cost-saving measures for individuals included in the health law, and longer-term projections of lower costs overall, will win eventual support of voters.

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