Sen. Kamala Harris’ breakout moment in last Thursday’s Democratic presidential debate when she confronted Joe Biden propelled her to third place behind the former vice president and Sen. Bernie Sanders, a poll released Sunday revealed.

In the Morning Consult survey, taken after last Thursday’s debate in Miami, 12 percent of Democratic primary voters said the California Democrat was their first choice for president – an increase of 6 percentage points since an earlier poll on June 23.

Harris hurdled past Mayor Pete Buttigieg of South Bend, Ind., and Sen. Elizabeth Warren.

Biden, who failed to parry an attack during the debate from Harris about his stand on busing back in the 1970s, remained in first place, but he fell 5 percentage points from the earlier survey when he registered 38 percent.

Sanders’ support was stable at 19 percent.

Both Warren and Buttigieg lost 1 percentage point of support.

The Morning Consult poll surveyed 2,407 registered voters beginning after Thursday’s debate. It has a plus/minus 2 percentage point margin of error.