Fiorina previously loaned her campaign $2.5 million, and her personal wealth gives her an advertising advantage heading into the final few weeks before the June 8 primary. Her GOP opponents, Assemblyman Chuck DeVore, R-Irvine, and former Rep. Tom Campbell have relied far more on fundraising efforts.
Fiorina has been running television and radio ads statewide since Sunday, hoping to cut into Campbell's polling lead in the three-way race.
A Rasmussen Poll released today showed Campbell and incumbent Democratic Sen. Barbara Boxer in a virtual dead heat in a hypothetical November matchup, with Boxer at 42 percent and Campbell at 41 percent. Rasmussen also had Boxer at a 46-40 advantage over DeVore and a 45-38 advantage over Fiorina.