Donald J. Trump had a difficult week after the first presidential debate, and, as you might expect, his polling was not great.

The national polls, and most polls in battleground states, released since the debate show Hillary Clinton with a comfortable advantage, perhaps by four or five percentage points nationwide among likely voters in a four-way race. She has led by even more in the head-to-head matchup.

The polls suggest that Mrs. Clinton’s performance has energized Democratic-leaning voters, helping to reduce the big gap between registered voters and likely voters that plagued her in many September polls. (Pollsters use responses to determine which registered voters are likely to vote on Election Day.)

But Mrs. Clinton’s big weakness among white working-class voters is still enough to keep Mr. Trump fairly close — perhaps closer than he’s been for much of the year.