This is one reason I'd like to make House seats four-year staggered (and maybe extend Senate seats to eight-year staggered, but maybe not). I think the two-year cycles of the House bring out the worst in enthralling to a perpetual campaigning (versus the actual business of governing). However, this would only be practicable with a substantial revision to the extent lawmakers can be (and most definitely are) enthralled to big donors, which is a separate problem that's sadly been sliding in the opposite direction of "good".