is doing his best to soften his image in a new ad, and expect to see a lot more like it, particularly from the house incumbents trying for the promotion. >> i'm running for the u.s. senate, because we need solutions, and washington needs montana common sense. >> finally, of course, there are at least a half dozen republican senate incumbents facing primary challenges that could at the very least batter them, drain them of war chests heading into the general election. over the weekend, in what could be a damaging twist for three-term kansas senator pat roberts, "the new york times" revealed he does not have a home address in kansas. the house on a country club golf course in dodge city that he lists as his voting address belongs to two longtime supporters that he pays rent to and stays with when he is in town. roberts faces a long shot tea party challenge from wolf, who has seized on the story to argue roberts is out of touch with his kansas roots. of course, the residency issue