With a little more than two weeks until a special election for the Senate in Alabama, President Trump on Sunday doubled down on his criticism of the Democratic nominee, Doug Jones, and reiterated his support for Roy S. Moore, the Republican candidate, who has been accused of sexual misconduct by a number of women.

“The last thing we need in Alabama and the U.S. Senate is a Schumer/Pelosi puppet who is WEAK on Crime, WEAK on the Border, Bad for our Military and our great Vets, Bad for our 2nd Amendment, AND WANTS TO RAISES TAXES TO THE SKY,” Mr. Trump tweeted on Sunday morning.

“Liberal Jones would be BAD!” he tweeted less than an hour later.

In response, the Jones campaign said Mr. Jones’s record as a prosecutor “speaks for itself.”

“Roy Moore was unfit for office before nine Alabama women served as witnesses to all Alabamians of his disturbing conduct,” Sebastian Kitchen, Mr. Jones’s spokesman, wrote in an email. “Doug Jones is continuing to focus on finding common ground and getting things done for real Alabamians.”