That's not including somehow a Democrat took Jeff Sessions seat (wtf?)
Is that really surprising considering a literal alleged pedophile was running a campaign in a special election that people hardly ever show up to? Roy Moore was not a candidate that ever had a chance of winning. No potential pedo is ever going to win a senate seat.
What should really be making the GOP nervous is that the Democrats had the largest national margin of victory ever (almost 10 million votes!), and they won the house by a large margin (41 seats), with a huge freshmen class that ran on holding Trump accountable (impeach the motherfucker). It's a crazy game and elections have consequences.
Trump sucks with women suburban voters and it's the reason Republicans lost a lot of the house coin toss races. He got destroyed in the midterms with this demographic and he needs to carry it in 2020. I don't think the GOP has to be particularly worried because democrats, like normal fashion, are shooting themselves in the foot with their radical policy proposal and impeachment sham. (Fun fact, Nancy Pelosi has a worse approval rating than Trump does, and she is hardly the target of any media scrutiny.) The freshman class of newly elected congresswomen pushed the party so far left and it's evident by Joe Biden's lead that modern democrats are not willing to be propelled into the derangement of the hardcore left. Still, there's a split in the party with the moderate democrats and the far left which the GOP and Trump will take advantage of.
Having people like AOC, Rashida Talib, and Ilhan Omar elected to congress were by far the best thing that could have happened to the GOP. Self proclaimed socialists and antisemites at the forefront of the democratic left, what could go wrong?