How many seats will this produce? Again, it’s exceedingly difficult to say. My model suggests a pickup of about 75 seats, give or take. Again, this might seem high, but think of it this way: 1994 saw a GOP victory of 6.5 percent, while I’m hypothesizing a victory of 10 percent, for an increase of 3.5 percent. So if we take 3.5 percent off the Democratic margin in every House race in 1994, the Democrats would have lost 67 seats rather than 52. Factor in district lines that are friendlier to Republicans in this decade, and 75 seats is within the ballpark. Put another way, check out the RealClearPolitics take on the House races. Give the GOP every “Likely Republican” and “Lean Republican” seat, give the Democrats every “Likely Democratic” and “Lean Democratic” seat, and give the Republicans 2/3rds of the “Toss-Up” seats, and you come out with a net gain of 75.