In Wisconsin, which got more than $810 million in federal stimulus money to build a train line between Milwaukee and Madison, Scott Walker, the Milwaukee County executive and Republican candidate for governor, has made his opposition to the project central to his campaign. In Ohio, the Republican candidate for governor, John Kasich, is vowing to kill a $400 million federal stimulus project to link Cleveland, Columbus and Cincinnati by rail. In Florida, Rick Scott, the Republican candidate for governor, has questioned whether the state should invest in the planned rail line from Orlando to Tampa. The state got $1.25 billion in federal stimulus money for the project, but it will cost at least twice that much to complete. And the nation’s most ambitious high-speed rail project, California’s $45 billion plan to link Los Angeles and San Francisco with trains that would go up to 220 miles per hour, could be delayed if Meg Whitman, a Republican, is elected governor. “In the face of the state’s current fiscal crisis, Meg doesn’t believe we can afford the costs associated with new high-speed rail at this time,” said Tucker Bounds, a campaign spokesman. With recent polls showing all of the anti-rail Republican candidates leading or within striking distance of their pro-rail Democratic rivals, it is possible they could be elected and try to stop the train projects.