Sen. Scott Brown (R-Mass.) raised nearly $2 million for his reelection effort between April and the end of June, his campaign told The Boston Globe on Wednesday.

Brown has about $9.6 million in cash on hand, a stockpile that he's hoping will ward off the difficult Democratic challenge he's expected to face next fall in the Bay State, a typically blue state.

Those kinds of heady numbers reflect the massive war chest Brown will have to build if he wants to hold on to the seat he won in a special election last January. There have been suggestions that he could raise as much as $25 million for the race, though his campaign has downplayed that number.

A handful of Democrats are in the race; Alan Khazei, the founder of the service group City Year, raised the most of them, reporting $920,000 for the quarter.