There were an estimated 75,000 donors and the average contribution was $220.

The committee says the average contribution from members who contribute is $28 a year.

The typical account balance is more than $20,000, the research company reported, with the average annual contribution at $2,800.

Members pay $20 in annual fees, but the average contribution is about $50 a member.

The average contributions to Senators are higher than those to House members.

However, in a 2001 study, Fischbacher observed average contributions of 33.5%.

Both had average contributions of about $250 a donor, based on their disclosures so far.

The average contribution to the fund, $261, is up about $10 from last year.

The average annual contribution is 4 percent of income.

Mr. Bush's campaign reported that the average contribution was $466.69.