Democratic presidential candidate Julián Castro saw the strongest fundraising day of his campaign after his appearance in the Democratic debates this week.

The former Housing and Urban Development secretary received an increase of nearly three times his previous best fundraising day following his Wednesday night debate performance, his campaign said in a Friday statement. He also received nearly three times the number of donations.

Over Wednesday and Thursday, the campaign raised 3,266 percent more money than it had the previous two days, according to the statement.

ADVERTISEMENT

Castro had a heated exchange with former Texas Rep. Beto O'Rourke Beto O'RourkeJimmy Carter says his son smoked pot with Willie Nelson on White House roof O'Rourke endorses Kennedy for Senate: 'A champion for the values we're most proud of' 2020 Democrats do convention Zoom call MORE over O'Rourke's opposition to Castro's proposal to remove a statute making illegal border crossing a federal crime during the debate.

“I think that you should do your homework on this issue,” Castro said during the exchange Wednesday night.

A FiveThirtyEight analysis found that Castro's approval rating increased more than that of anyone else who shared the stage with him on Wednesday.

Castro is among the more than two dozen people vying for the Democratic Party's 2020 presidential nomination.