With help from the White House, Florida Sen. Bill Nelson (D) raised close to $2 million last quarter.
President Obama and Vice President Biden both attended fundraising events last quarter for the senator, who is expected to face a stiff challenge from the GOP in 2012. With their help, Nelson's campaign coffers have swollen to between $4.5 and $5 million, according to a release.
The National Republican Senatorial Committee referred to the White House's fundraising help in its statement dismissing Nelson's quarterly numbers.
The senator's total includes the some $2 million raised in the first quarter of 2011 and the slightly more than $3 million Nelson had on hand at the start of the year.
"Word on the street among campaign consultants is that Nelson will report raising more this quarter than any other elected Democrat in the Senate, except for [Sen.] Kirsten Gillibrand [D-N.Y.], who reportedly raised $3 million," the Nelson campaign said in a statement.
Republican Senate candidate Haridopolos has yet to release his fundraising report, and some of the other potential candidates, including state lawmaker Adam Hasner, haven't filed papers yet to run.