Recent polls confirm what many Republican lawmakers probably already suspected: President Trump is a net drag on Republicans heading into the 2018 midterms, especially in this year's battleground — upper middle class suburbs — but he's also crucial to turning out their base. "It's a political catch-22," Virginia GOP strategist J. Tucker Martin tells The New York Times. "Candidates can't win without their base. But what it takes to satisfy a pro-Trump base in 2018 will make Republican candidates in many states unacceptable to large swaths of the electorate." Or, as Homer Simpson phrases that dilemma (regarding alcohol, not Trump):

With GOP electoral chances hanging so heavily on Trump, there's some good news in a new CNN-SRSS poll: Trump's approval rating is at an 11-month high of 42 percent. "Buried in that poll, though, is a detail that won't be reassuring to his party," says Philip Bump at The Washington Post. "Among those who say they're very enthusiastic about voting in November, he's at only 38 percent support, with 60 percent saying they disapprove. Among those less enthusiastic about voting, as many people view Trump with approval as with disapproval." Why does that matter? Bump explains:

Well, in theory, because it means that the people most motivated to vote are also those least supportive of Trump. Which suggests that the people they're going to vote for in November are not Republicans. A recent Fox News poll shows that Democrats are indeed the group that's more enthusiastic about voting. [The Washington Post]

But as Trump's popularity ticks up, the Democrats' enthusiasm advantage narrows, Bump notes. And because of gerrymandering, Democrats have a surprisingly narrow path to control of Congress; a new Brennan Center for Justice report suggests that Democrats must win nationally by 11 percentage points to get the 24 seats they need to pick up to win the House. That conclusion met resistance from some Democratic and Republican strategists, but few observers think electoral waves are inevitable. Peter Weber