Donald Trump was convicted on 34 felony counts of falsifying business records in May in New York.
A jury of New Yorkers found him guilty of all counts in connection with a hush-money payment made to an adult film star.
Judge Juan Merchan pushed back Trump's sentencing from September to 26 November, after the election.
He could still go forward with the sentencing as planned despite Trump's win, said former Brooklyn prosecutor Julie Rendelman.
But legal experts said it is unlikely that Trump would be sentenced to prison as an older, first-time offender.
If he was, his lawyers would appeal the sentence immediately, arguing that jail time would prevent him from conducting official duties and that he should remain free pending the appeal, Ms Rendelman said.
"The appellate process in that scenario could go on for years," she said.