5) The National Republican Congressional Committee launched a $6.3 million ad campaign, Roll Call reported. Meanwhile, new House Majority PAC ads target Randy Altschuler in New York's 1st District, and the Democratic Congressional Campaign Committee released a spot targeting Andrew Roraback in Connecticut's 5th District. 4) A light ad dropping today from Sen. Joe Manchin, D-W.V., who is in good shape for his reelection bid. The commercial features the senator getting a haircut from his wife, Gail, as an announcer notes that she has cut his hair for more than 20 years and lists his accomplishments on spending and waste. At the end of the spot, Manchin say that "a penny saved in a penny earned," and his wife adds "and he's cheap." 3) A new poll of the Montana Senate race out Sunday shows Rep. Denny Rehberg leading Democratic incumbent Jon Tester narrowly -- 48 percent to 45 percent, with the margin of error. And a new poll in the Ohio Senate race has Democratic Sen. Sherrod Brown leading GOP Treasurer Josh Mandel by 7 points. 2) Sen. Scott Brown, R-Mass., attacks Elizabeth Warren over her Native American ancestry claims television ad. The spot uses television clips from the spring, arguing: "She is facing tough questions about whether she claimed to be a minority for professional gain." The ad ends with a reporter asking, "Is there anything else that's going to come out about you that we don't already know?" and Warren saying, "You know, I don't think so, but who knows." Brown was also quick to pounce on the issue when the two candidates met for their first debate last week. The ad war in Massachusetts has only turned negative in recent weeks, and this is the hardest-hitting spot so far. 1) President Obama acknowledged that some ads from his campaign and the super PACs supporting him sometimes "go overboard," but said that's part of politics. In an unaired portion of his interview with CBS's 60 Minutes, which was posted on the network's website, Obama said, "Do we see sometimes us going overboard in our campaign--mistakes that are made, or areas where there's no doubt that somebody could dispute how we are presenting things? That happens in politics." Meanwhile, Obama attacked Romney in a new ad on Monday. And, Romney attacked Obama in a new ad of his own.