“Everyone thought the election was going to be close. How did [Republicans] not know we were going to get our ass kicked?” lamented Rob Jesmer, head of the National Republican Senatorial Committee. “I don’t understand how we didn’t know. That’s the part that’s most puzzling and frustrating and embarrassing.”…

Some answers are easy to implement: Pollsters should fix voter screens, used to weed out of their samples irregular voters who aren’t likely to vote. Including only likely voters often leads to a more Republican-heavy sample. But in an era of fine-tuned turnout machines and get-out-the-vote drives, even those irregular voters are likely to show up. Polling all registered voters, rather than those most likely to make it to the polls, would at least give Republicans an idea of the worst-case scenario.

Pollsters should also control more for age, gender, and race than for party identification. One prominent party pollster pointed to a late survey conducted for Indiana Republican Richard Mourdock that showed him leading Democrat Joe Donnelly by 2 points. That survey, conducted by McLaughlin & Associates, showed that 56 percent of Indiana’s electorate would be over age 55. Exit polls revealed that number to be vastly overstated; only 43 percent of the electorate was over 50…

Democrats “must be looking at us like we’re the biggest f—– morons in the world,” one frustrated Republican said. “That’s what I’d be doing.”