Republicans Rally Behind Trump After Conviction, Times/Siena Poll Finds

President Biden continues to confront deeper doubts among Democrats than former President Donald J. Trump faces among Republicans — even after Mr. Trump was convicted of 34 felony charges last month, according to a new poll by The New York Times and Siena College.

The national survey on the eve of the first presidential debate shows that voters have broad distaste for both candidates but that Mr. Trump has so far better consolidated the support of his own party. Only 72 percent of voters who said they cast a ballot for Mr. Biden four years ago say they approve of the job he is doing as president. And voters overall say they now trust Mr. Trump more on the issues that matter most to them.

[You can find the full results of the polls, including the exact questions that were asked, here . You can see answers to common questions about our polling process here .]

In the first Times/Siena poll since the former president’s trial ended with a guilty verdict on May 30, more than two-thirds of voters said the outcome of his Manhattan criminal case made no difference to their vote. Roughly 90 percent of Republicans still view Mr. Trump favorably.

And among the relatively small slice who said the conviction would make a difference in their vote, Republicans said the outcome would make them likelier to support him than oppose him by a roughly 4-to-1 margin.

At the same time, the poll revealed some vulnerabilities for Mr. Trump because of his conviction, especially among independent voters who could prove decisive in November. Twice as many independents said the conviction made them more likely to oppose Mr. Trump than support him, and a majority of independents also believe he received a fair trial.