Second, THE OKAY WAVE SCENARIO: Polling stays about where it is — with strong generic GOP lead (5 to 9 percentage points or more) as GOP leads in many Senate races stay roughly the same; in places like Washington, California and Connecticut, Democrat candidates either break 50 percent or keep a steady gap or widen it. Still, a wave election, with House gains of up to 50 or 60. But GOP fails at Senate control by two to four seats, which shows that (1) to some extent the Democrats’ strategy of individualizing senate rates with harsh negative attacks worked or (2) voters just chose to channel their anger at the Obama administration in their House voting but were discriminating – picking and choosing — in the Senate races.
Third, THE HAPPY-TIMES WAVE SCENARIO: Polling stays about where it is — with strong generic GOP lead between 5 and 9 and GOP Senate candidates in Washington, California, and Connecticut still within reach (6 to 9 points down.) There you would see House gains of up to 50 or 60 or a bit beyond, and it’s a wave election that really does lift all boats and the GOP takes the Senate by a vote or two.