5) And Brown released a new ad Monday hitting Warren on taxes. 4) The North Dakota Senate race is a dead heat, with GOP Rep. Rick Berg and former Democratic Attorney General Heidi Heitkamp tied in a new poll: Each candidate has 47 percent support in the Valley News Live/Mason-Dixon survey, while 6 percent of likely voters remain undecided. Meanwhile, Heitkamp is up with a new ad this morning, saying she'll fight to build another refinery in North Dakota. And the Fargo Forum reports that local TV stations are pulling a Democratic Senatorial Campaign Committee ad hitting Berg on ties to Goldmark Property Management due to concerns about the spot's accuracy. 3) The Obama campaign is taking the silly season in politics to a whole new level in a television ad released on Tuesday featuring the star of last Wednesday's debate: Big Bird. The Obama campaign has criticized Romney for pledging to end subsidies to PBS, and doubled down in the ad. "Big. Yellow. A menace to our economy," the ad says. "Mitt Romney knows it's not Wall Street you have to worry about, it's Sesame Street." NBC News reported the ad isn't airing in any battleground states; at best, it's a small national cable buy. 2) A Pew poll shows Romney with a narrow lead after the debate. The New York Times reports on Romney's new Ohio push. 1) And Politico looks at the Romney "family intervention" into the campaign. From the story:
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