Amy Walter: “In fact, when you look more closely at the kinds of districts Republicans are defending in 2018, they don’t look much different from those they had to defend in 2006. For example, there are about as many competitive GOP-held seats in play today in districts with a slight GOP lean (PVI of R+1 to R+5) (23) as there were right before the election in 2006 (22). And, while it’s true that there are few “low hanging fruit” type of districts for Democrats to pick-off (just 23 districts held by Republicans voted for Hillary Clinton), there weren’t many easy lay-ups in 2006, either. Back in 2006, Republicans held just 18 seats won by Democrat John Kerry in the previous presidential election. By the election of 2006, just 15 GOP-held seats (or 27 percent of the total number of GOP-held competitive districts), were in districts that had a slight Democratic lean (a PVI of Even to D+8). Today, of the 40 most competitive seats held by Republicans, 10 (or 25 percent), have a slight Democratic lean (Even to D+5).”
“The 2018 map is not easy for Democrats, but it’s not any more challenging than the one Democrats faced in 2006. Midterm elections are a referendum on the party in power, not the party out of power. However, the dislike for the Democratic party among GOP partisans is more intense today than it has ever been. The question is whether that antipathy to Democrats will be enough to match the anger and opposition to Trump among Democrats and Democratic-leaning voters.”

