https://www.axios.com/the-senate-ma...716-fbf31a5e-be67-41f9-a9b4-e518fa8c87b7.htmlSenate seats currently held by Democrats or independents caucusing with them are up for election in 2018 — more than half of the Democratic caucus. Even more significantly, 10 of those seats are in states that voted for Trump in 2016. Conversely, just eight Republican seats are up for election with only one in a state that went for Hillary Clinton.
538 presented a scenario that should terrify Democrats: it took Iraq, Katrina, the start of the Great Recession and rock bottom approval ratings for George W Bush for the Dems to grab a 60-seat Senate supermajority in 2008. But 30 states went for Trump in 2016, meaning the GOP would just need to nab both senators from those states in order to attain a supermajority — not unthinkable in today's hyperpartisan, straight-ticket environment.