Bernie SandersBernie SandersLive Coverage: Senate edges close to passing scaled-down ObamaCare repeal Sanders: Senate healthcare fight 'totally bananas' Overnight Defense: Military won't lift transgender ban until Trump sends directions | House passes national security spending | Russian sanctions bill heads to Trump MORE has released a new ad that accuses Hillary ClintonHillary Rodham ClintonSessions says he doesn't regret recusing himself from Russia probe Judiciary Committee Republicans want a second special counsel: report Fusion GPS: White House trying to smear us on Russia MORE of being too close to big banks.

"There are two Democratic visions for regulating Wall Street. One says it's OK to take millions from big banks and then tell them what to do," Sanders says in the ad, a reference to his rival for the presidential nomination. 
 
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"My plan: break up the big banks, close the tax loopholes, and make them pay their fair share. Then we can expand healthcare to all and provide universal college education.”
 
The TV spot, which will hit the airwaves in Iowa and New Hampshire, is the first by either campaign to make a blunt contrast between the two candidates. Both campaigns had stuck to ads the focused on the candidates' personal stories or government service.
 
Sanders has repeatedly looked to chide Clinton for her ties to big banks, alleging that her willingness to accept donations from the industry could prevent her reining in bad behavior. An exchange on the issue made waves during the November presidential debate, where Clinton accused Sanders of making that point to "impugn my integrity." 
 
While the new Sanders ad only makes a passing reference to Clinton, the campaign statement that corresponds with it makes the target clear. 
 
"Hillary Clinton, another candidate for the Democratic presidential nomination, recently claimed that her proposals were backed by 'everybody,' " the statement reads.  
 
"In a Jan. 5 speech in Sioux City, Iowa, she asserted that 'everybody who’s looked at my proposals says my proposals are tougher, more effective, more comprehensive.' It wasn’t true then, as The Washington Post reported, and it’s not true now."
 
The campaign cites a Washington Post fact-checker article that claims Clinton "exaggerated" that endorsement. It also released a letter from economic experts who pan Clinton's Wall Street proposal as too moderate. 
 
Sanders and Clinton have repeatedly locked horns as the calendar moves closer to the start of voting. Sanders leads most New Hampshire polls, and Clinton holds a slim lead in Iowa.