WASHINGTON — Senator Clinton ended September with more money in the bank than a rival, Senator Obama, holding $35 million cash on hand for the presidential primary contests to his $32 million. Both were far ahead of Mayor Giuliani, the money leader on the Republican side, underscoring the financial disparity between the parties. Mr. Giuliani reported $11.6 million in the bank for the GOP primary.

Mrs. Clinton, who had trailed Mr. Obama in fund raising and in money in the bank at the end of June, edged past him with an aggressive third quarter of fund raising.

Neither Mr. Obama nor Mrs. Clinton had yet filed detailed reports of their third-quarter finances with the Federal Election Commission. The reports were due at 11:59 p.m. EDT yesterday.

Mrs. Clinton, who also has been raising money for the general election, had a total of $50 million in the bank, her campaign said last night. But $15 million of that cannot be used for the primaries.

Mr. Obama had a similar cash-on-hand amount at the end of June, meaning he likely spent the $20 million he has reported raising between July and September. Mrs. Clinton appears to have spent less than the $22 million she raised for the primary.

Among Republicans, Mitt Romney spent $21 million on his campaign during the third quarter, more than twice what he raised during the period and more than what he spent in previous quarters, according to his FEC report. The former Massachusetts governor, who has been tapping his personal wealth to supplement money from contributors, raised $9.8 million and lent his campaign $8.5 million over the summer. Mr. Giuliani reported spending $13 million during the same period, compared to the $10.2 million he raised for the primary campaign. Mr. Giuliani also raised about $1.3 million to spend on the general election if he wins the nomination.

Fred Thompson, who didn’t officially enter the race until early September, reported spending $5.4 million during the quarter, more than half of it last month.

Mr. Thompson, whose report covers fund raising and spending since June, when he began exploring a presidential bid, raised $12.8 million during that four month period. He reported $7.1 million in the bank at the end of September, as well as $678,000 in debts.

Mr. Romney reported $9.2 million cash in hand, thanks in large part to the $17.5 million he has funneled into his campaign since the beginning of the year. He has raised $45 million since January, but leads all Republican candidates with $52.8 million in spending for the year.

As a group Messrs. Romney, Giuliani, and Thompson enter the final stretch before the first nominating contests with money to spend on get-out-the-vote and advertising campaigns.

Mr. Giuliani led the Republican field in fund raising this summer, according to early estimates provided by the campaigns, though his July-September total fell from his high during April-June. It was the first time Mr. Giuliani’s campaign spent more than it raised during a quarter.

Mr. Thompson, the former Tennessee senator and actor on NBC’s “Law & Order,” raised $9.3 million of his $12.8 million total during July-September.