Do you all not realize that Democrats have not nuked him yet? By the time election day rolls around he'll look much worse. And that isn't even taking into account how he has to handle keeping Trump away without alienating Trump voters.
New Hampshire is a swing state, not a blue state, it was very close in 2016 and just seems to tend to be elastic more than anything else. Also Democrats have tried tying him to Trump in all three of his statewide bids and it didn't work, the same failed strategies are not the answer, remains Lean R with Sununu, Tossup without.
You do realize that gubernatorial and Senate races are not exactly of the same nature, right? There’s a reason why people like Mike Sullivan, Bill Weld, Linda Lingle, Phil Bredesen and Steve Bullock were able to win gubernatorial races but not Senatorial races (The same would hold true for people like Phil Scott, Charlie Baker, and Larry Hogan should any of them attempt to run for Senate in the foreseeable future.). It is much easier to tie candidates to national political figures when they are running for federal offices instead of state- or local-level offices.
You do realize that AK, HI, TN, MT, MD, MA, and VT are all way less competitive nationally than NH, right? If Sununu has a Bredesen or Bayh-tier overperformance in NH, he will win, it's that simple.
