Republican Rudy Giuliani's presidential campaign reported an estimated $15 million in primary election contributions from April through June and Mitt Romney trailed closely behind with $14 million raised.

Romney, the wealthiest candidate in the presidential field, also tapped his personal bank account for an extra $6.5 million.

Giuliani raised more than $17 million during the quarter, the campaign said, but about $2 million was for the general election — money he can only use if he wins the GOP nomination.

The campaign had an estimated $15 million cash on hand for the primary and about $3 million set aside for the general election.

Overall, Giuliani saw an increase in his fundraising over the first quarter, when he reported nearly $16 million in contributions. About $1 million of that sum was for the general election.

Romney's fundraising fell short of his first quarter, when he raised $20.6 million and lent himself $2.35 million. All of Romney's money is for the primary election.

The Romney camp reported $12 million cash on hand, equal to the amount he had in the bank at the end of the first quarter. Aides said the campaign also boosted its number of donors from 32,000 in the first quarter to 80,000 for the first six months of the year.

The figures place Giuliani and Romney solidly ahead of rival John McCain, who reported $11.2 million raised during the period but only $2 million cash on hand. McCain reported having 72,000 donors overall.

Romney, with assets estimated at between $190 million and $250 million, has a total stake in the campaign now of $8.85 million — about $1 of every $5 in revenue.

As the least known of the leading Republican candidates, Romney has tried to boost his name recognition with television ads worth at least $4 million during the first six months of the year. The ads have helped increase his standing in public opinion polls.

Romney's total revenue for the year, including his loans, is nearly $44 million. He has spent about $32 million. Giuliani has primary election revenues of nearly $32 million and has spent nearly $17 million. In the first quarter, Giuliani transferred nearly $2 million from his Senate race in 2000.

Details of their fundraising and spending, as well as that of other presidential candidates, won't be apparent until they file extensive finance reports with the Federal Election Commission by mid-July.

Romney is not the only one to suffer a lag in fundraising. McCain lost ground in the second quarter as well, forcing him to restructure his campaign and consider accepting public financing for the primaries.