The federal campaign finance report filed Thursday covers Jan. 1 to Feb. 8 including the final three weeks of the special election campaign and the weeks after the Republican's upset win over Democrat Martha Coakley.

Brown's capture of the Senate seat held for nearly half a century by the late Edward Kennedy has made him star in Republican political circles.

As he closed in on Coakley in the final stretch of the campaign, money flooded in from across the country at a rate of about $1 million a day to support Brown, who had been considered a long shot just weeks earlier in one of the most liberal states in the country.

All told, Brown collected $15.2 million in his campaign, nearly all of it in those final chaotic weeks, particularly when polls began to show the race slipping away from Coakley.

Coakley's campaign did not immediately release her fundraising totals.

Brown's campaign portrayed the fundraising as broad-based. They said donations came from 154,431 donors and the average donation was $86.