Businesswoman Carly Fiorina jumped to second place behind billionaire Donald Trump in a new poll of GOP presidential contenders released Sunday. The surge follows her widely-lauded performance in this week’s Republican presidential debate.

The new poll, conducted by CNN following the debate, shows Trump in the lead with 24% of support among registered Republican voters and independents who lean Republican. Fiorina, neurosurgeon Ben Carson and Senator Marco Rubio follow with 15%, 14% and 11% of the vote, respectively.

The poll also suggests waning interest in the establishment candidates who led polls in earlier days of the GOP race. Former Florida Governor Jeb Bush received 9% support. Not a single person polled said they supported Wisconsin Governor Scott Walker, a candidate who once led polls in the early voting state of Iowa.

For Fiorina, the second-place status marks the latest sign of a surging campaign for a candidate that just weeks ago polled in the low single digits. The poll also marks the rise of Rubio, who pundits say also performed well in this week’s debate.

The poll included 444 Republicans and had a margin of error of +/- 4.5%.

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Write to Justin Worland at justin.worland@time.com.