Republican candidate Linda McMahon has pumped another $8 million into her U.S. Senate campaign, bringing her personal investment in the race to about $14.5 million.

Her latest contribution, which will be listed as a loan in her official filing, is listed in a brief summary of her fundraising for the first three months of 2010 that her campaign released Thursday.

Her campaign has $4.3 million cash on hand.

Former U.S. Rep. Rob Simmons, her main rival for the GOP nomination, reported raising $550,000 and had $1.4 million cash on hand. Republican Peter Schiff reported raising $350,000 and had more than $1 million on hand.

Attorney General Richard Blumenthal, the Democratric frontrunner, reported last week that he has raised $1.87 million since becoming a candidate in January. He has $1.6 million on hand.

McMahon, the former chief executive of World Wrestling Entertainment, is self-financing her campaign for the seat being vacating by U.S. Sen. Christopher J. Dodd. She has budgeted $50 million for the effort to win her first try for elective office.

She is accepting contributions of no more than $100. For the quarter, others donated $5,454.The campaign also received $31,780 in in-kind contributions.

McMahon began the quarter with $1 million cash on hand, meaning that her campaign spent $4.8 million in the first three months of the year, similar to the amount spent since beginning her campaign last September.

WIth heavy television advertising, McMahon has turned a 10-point deficit into a 10-point lead over Simmons, who has yet to air television commercials. Schiff also is airing commercials.