BOSTON — Republican Mitt Romney, who has a net worth estimated at up to $350 million, said Monday he has given money to his presidential campaign for a second time and may do so again before this weekend's fund-raising deadline.
The former venture capitalist declined to say how much money he has contributed, although the financial reports he has to release within weeks will reveal the amount.
The second-quarter fund-raising period for all candidates ends Saturday.
Romney said an unprecedented $4 million that he spent on early advertising forced him to make the personal contributions. The former Massachusetts governor served only one term and started the campaign largely unknown outside his home state.
"One of the things I've had to do that you don't have to do if your name is McCain or Giuliani is introduce myself to people in Iowa and South Carolina and New Hampshire," Romney said, referring to rivals John McCain and Rudy Giuliani.
Romney revealed the donation as his supporters sought contributions from their friends and business colleagues at an event in TD Banknorth Garden, home to the Boston Celtics and Bruins.