A 10-point Democratic lead among all adults narrows to 4 points among registered voters and 5 points among those who say they’re both registered and certain to vote; neither of those is statistically significant. In January, by contrast, Democrats held similar margins in all three groups – 13, 12 and 15 points, respectively.

Factors at play include a slide in self-reported registration among Democrats, which is a sign of waning engagement; consolidation among Republicans of their base; and better results for the GOP among less-educated Americans generally, and non-college-educated white women in particular.

Among other results, the poll, produced for ABC by Langer Research Associates, finds more than three-quarters of Americans looking for a congressional candidate who agrees with them on gun policy. Fewer, but still half, call it important for them to back a candidate who shares their view of Donald Trump, and a yet small number, about a third, are looking for a candidate who agrees with them about Nancy Pelosi, the House Democratic leader.