A majority of Americans say Democrat Hillary Clinton won Monday night's presidential debate, but her performance doesn't appear to have immediately boosted her support among likely voters, according to a Reuters/Ipsos national tracking poll released on Wednesday.

The online poll, which gathered responses from more than 2,000 people on Tuesday, found 56 percent of American adults felt that Clinton did a better job than Trump in the first of their three televised debates, compared with 26 percent who felt that Trump did better.

Of those who thought Clinton emerged the victor, 85 percent were Democrats and 22 percent were Republicans.