COLUMBIA, S.C. (AP) — South Carolina Democrat Jaime Harrison has shattered congressional fundraising records, bringing in $57 million in the final quarter for his U.S. Senate campaign against Republican incumbent Lindsey Graham as the GOP tries to retain control of the chamber in the Nov. 3 election.

Harrison's campaign said Sunday that the total was the largest-ever during a single three-month period by any Senate candidate. That tops the $38 million raised by Democrat Beto O'Rourke in 2018 in the final fundraising period of his challenge to Sen. Ted Cruz, R-Texas, who won the race.

Graham ha...