Mike Collins

Democratic U.S. Sen. Jon Ossoff raised about $20 million in campaign contributions from April through June.

Republican challenger U.S. Rep. Mike Collins raised just over $2 million during the same period.

Ossoff's campaign ended the quarter with $42 million on hand, while Collins' campaign had about $2 million.

ATLANTA — Democratic U.S. Sen. Jon Ossoff raised about 10 times as much in campaign contributions over the past three months as U.S. Rep. Mike Collins, his Republican challenger in the November general election, according to numbers from the two campaigns.

Ossoff's campaign said it raised $20 million from April through June, ending the period with $42 million on hand. Collins' campaign said it raised a little over $2 million in the second quarter and had about $2 million on hand.

Ossoff's campaign suggested his financial advantage could change after a U.S. Supreme Court decision two weeks ago that struck down a federal law limiting how much political parties can spend in coordination with candidates.

Ossoff's campaign manager, Ellen Foster, said Ossoff is building momentum "to push back against Republican dark money, power our massive and winning coalition over the next four months, and resoundingly defeat Trump loyalist Mike Collins at the ballot box come November."

Both candidates characterized their campaigns as "grassroots."

The Ossoff campaign said it averaged $42 from more than 474,000 donors, adding that nearly 340,000 gave less than $200.

The donations came from all 159 Georgia counties, Ossoff's campaign said.

Collins' campaign said it averaged $19.05 from about 16,000 donations but did not characterize the maximum amount of most donations. The Collins campaign also did not say where its donors were located but said it had an operation spanning all 159 counties.

Collins' camp asserted its opponent took in significant amounts from donors in other states.

Ossoff's "California and New York donors know exactly what they’re funding: a senator who will push their socialist agenda in Washington," Collins' campaign manager Josh Siegel said in a statement. "Mike Collins’ support comes from everyday Georgians because they know he will always put Georgia first," he added.