Gov. Tim Walz of Minnesota on Tuesday called for abolishing the Electoral College as a means of electing American presidents, reiterating a position he has articulated in the past while he and Vice President Kamala Harris are in the heat of a campaign for the White House.

Twice during campaign fund-raisers on the West Coast, Mr. Walz said he would prefer that presidential candidates did not have to focus on a few political battlegrounds and could instead focus on winning votes from across the country.

“I think all of us know, the Electoral College needs to go. We need a, we need a national popular vote,” Mr. Walz told donors at the Sacramento home of Gov. Gavin Newsom of California. “So we need to win Beaver County, Pa. We need to be able to go into York, Pa., and win. We need to be in western Wisconsin and win. We need to be in Reno, Nev., and win.”