5) American Crossroads is going on the air in Nebraska's Senate race for the final week of the election. 4) In a new television ad, Democratic North Dakota Senate candidate Heidi Heitkamp talks about her upbringing in North Dakota, and how she learned "that we vote for the person, not the party." Meanwhile, Bill Clinton campaigned for Heitkamp Monday, calling her "bipartisan" and "common-sense." 3) And in Wisconsin's Senate race, Clinton is the star of a new Tammy Baldwin ad. The spot features Clinton speaking about Baldwin's record and contrasting it with Tommy Thompson's. Thompson is also up with a new commercial, where he speaks to the camera about his upbringing and record, and hits Baldwin. And "The Fix" reports on another new Thompson ad attacking Baldwin on debt and spending. 2) The final Massachusetts Senate debate, scheduled for tonight, is apparently off due to Sandy. Sen. Scott Brown, R-Mass., pulled out Monday, and Elizabeth Warren later did as well. 1) New Jersey Gov. Chris Christie thanked Obama in a tweet for his assistance during Sandy. "The president has been all over this and he deserves great credit," said Christie on MSNBC's "Morning Joe". "(He) told me to call him if I needed anything and he absolutely means it and it's been very good working with the president and his administration."