U.S. Rep. Mazie Hirono has raised more than $300,000 over the past three months for her Democratic primary campaign for U.S. Senate, according to a summary of her quarterly federal campaign-finance report.

The Hawaii Democrat has more than $722,450 in cash on hand.

Hirono continues to lead her primary rival, former congressman Ed Case, in fundraising.

Case said in a statement that his campaign had raised $136,000 in the past quarter and had $272,000 in cash on hand.

Former Gov. Linda Lingle said she hopes to raise $8 million to $10 million for her Republican campaign.

Hirono, in a conference call with reporters, said she will raise enough to be competitive but would not disclose a specific target. She said Lingle had never run for a federal office before and had never run during a presidential election year.

"I think I’m disappointed in Linda as governor," Hirono said. "The way she went out and campaigned for Sarah Palin (for vice president) and identified herself with Sarah Palin, whereas I identify myself with the middle class, with the working people, with the families that are struggling. My campaign is focused on those voters."

Case said Hirono, as an incumbent congresswoman, has an advantage when fundraising.

"Washington politicians always have a built-in advantage when it comes to raising money for political campaigns," he said. "Mazie is no different as we can see by her most recent campaign spending report. She started with around $350,000 in the bank from contributions to her House campaign and has asked for even more Mainland special interest money.

"We have a better way. Our campaign supporters are right here in Hawaii. More support from local voters means that we can go to Washington representing only the people of Hawaii, accomplishing the change we all want."