This. Remember all those states that Bush and Obama won in 2004 and 2008 by double digits that ended up electing opposite party senators? Lol
And remember that every state last year voted for the same party in both the presidential and the Senate race? Assuming people like Heitkamp and Donnelly will easily cruise to reelection just because TRUMP!!!1! is a dangerous assumption and shows how overconfident Democrats are again.
Democrats can be overconfident but it feels like whenever a Red Avatar expresses anything but abject despair, you're there to jump down their throats about it.