Many in the president’s party point to Tuesday as proof that congressional Democrats need to stop their left-center squabbling and clock some legislative wins ASAP by passing both the bipartisan infrastructure bill and a robust version of the Build Back Better plan, the larger social spending and environmental proposal. They believe this will give their candidates concrete achievements to run on next year and help re-energize their base.

But Tuesday’s results are a sign that significant parts of the electorate are feeling leery of a sharp leftward push in the party, including on priorities like Build Back Better, which have some strong provisions and some discretionary ones driving up the price tag. The concerns of more centrist Americans about a rush to spend taxpayer money, a rush to grow the government, should not be dismissed.

Tuesday was not just about Republicans reclaiming electoral ground from Democrats. Even in many blue enclaves, voters showed an interest in moving toward the center. In Buffalo, N.Y., the democratic socialist who bested the current mayor, Byron Brown, in the Democratic primary appears to be losing to Mr. Brown’s write-in campaign. In Minneapolis, a referendum to replace the police department with a Department of Public Safety went down in flames. In the New York mayoral race, voters went with Eric Adams, a moderate Democrat who ran with a focus on law and order. “Progressives on the ropes?” asked The Seattle Times, in a postelection piece noting that “the more moderate, business-backed candidates in the city’s three most watched races surged to huge and likely insurmountable leads.”