Because it was the normal loss of power for the sitting president in a midterm election, not a blue wave. If they also lost the senate it would have been a somewhat different story. In midterms since 1862, the president's party has averaged losses of about 32 seats in the House and more than two seats in the Senate. The GOP lost 23 house seats (I think, not totally sure of the exact #) and gained 2 senators. And yes, I know that is an old article but I heard something like that on the news a few days ago and this was the first one that popped up with the least amount of searching. Do presidents always get The way I see it this was one where either side can claim victory and have a point. Dems managed to take back a chamber and thus start bothering Trump for the next 2 years and GOP managed to avoid the major Trump backlash many predicted from more or less the day he was elected.