A big reason why polls are more accurate in midterm elections is because figuring out who is most likely to make it to the polls is less of a challenge for pollsters. In off-year, low-turnout elections, politics doesn’t dominate the zeitgeist. “SNL isn’t opening with a skit on the Nebraska Senate race,” another Democratic strategist says. In other words, it’s easier to pinpoint those voters who are dialed into an election when the White House isn’t in play. After all, many people can’t even name their member of Congress, let alone have a strong opinion on them. As much as Trump keeps saying he’s on the ballot this fall, he objectively is not.
Both sides are acting like the polls are accurate
While Republicans insist polls are underestimating their support, their allocation of resources suggests they believe what the polls in key battlegrounds are telling them. For instance, as polls showed Democrat Roy Cooper well ahead of Republican Michael Whatley in North Carolina’s Senate race, Republicans largely pulled their funding, a clear sign they believed that Cooper’s victory is all but assured.