House GOP leaders are delaying Thursday's expected vote on their ObamaCare replacement bill, a source told The Hill.

A House Republican Conference meeting is set for 7 p.m. on Thursday.

Republicans aimed for a House vote on the seventh anniversary of ObamaCare becoming law. 

But members of the conservative House Freedom Caucus left a meeting with President Trump on Thursday afternoon without a deal in place to back the American Health Care Act.

Trump and GOP leaders are scrambling to find the 215 votes they'd need for the bill to pass the House.

Reps. Phil Roe (R-Tenn.) and Greg Walden (R-Ore.) earlier in the day expressed doubt that the vote would happen as planned.

About an hour before news broke that the vote would be delayed, White House press secretary Sean Spicer said he still expected the bill to come up for a vote Thursday.

"That would obviously be up to Speaker [Paul] Ryan and Leader [Kevin] McCarthy, but nothing leads me to believe that's the case," Spicer said when asked if the vote would be pushed back.

Spicer also said the whip count of votes in favor of the bill was improving.

"We continue to see the number go up, not down, and that's a very positive sign."

Jessie Hellmann contributed.

Updated at 3:42 p.m.