Former MTA Chairman and GOP mayoral front-runner Joe Lhota raised a whole lot of dough to jump start his bid for City Hall.

Lhota took in $730,000 the past two months – almost $100,000 a week since announcing his candidacy, sources told The Post. Assuming he raises enough to qualify for matching public funds, that figure grows to more than $1 million.

“It’s a good number — absolutely,” said a Republican official not affiliated with the campaign.