PEWAUKEE, Wis. — Scott Walker, who moved Wisconsin to the right over the last eight years, cutting taxes and sharply diminishing the power of labor unions, conceded the governor’s race on Wednesday to the Democrat, Tony Evers, the state schools superintendent.

The advantage for Mr. Evers was razor thin, a little over 1 percentage point. With more than 2.6 million votes cast and 100 percent of precincts reporting, Mr. Evers led by about 30,000 votes.

For hours overnight, Mr. Walker said the campaign was waiting for more information before deciding how to proceed. But on Wednesday afternoon, the campaign said that Mr. Walker had called Mr. Evers and that any additional counting of votes would not be enough to change the outcome. The Wisconsin Elections Commission said that the race was outside the margin to qualify for a recount.

“We’ve come a long way together and it is my sincere hope that the progress we’ve made during our time in office will continue and that we can keep Wisconsin working for generations to come,” Mr. Walker said in a statement.