David Wilhelm, who was Bill Clinton’s campaign chairman in 1992, has endorsed Senator Barack Obama for president.

Mr. Wilhelm lives and works in Ohio, which will be a major battleground for the Democratic candidates come March 4.

After Mr. Wilhelm helped him win the election, Mr. Clinton made Mr. Wilhelm the chairman of the Democratic National Committee. Now a venture capitalist who focuses on neglected regions of the country, Mr. Wilhelm is also a superdelegate and said he expected the Obama campaign would want him to get on the phone to lobby other superdelegates.

He said in a conference call today that Mr. Obama was more electable than Senator Hillary Clinton. Mr. Obama’s campaign is evidence of his leadership, he said, calling it “masterful.”

“He has out-worked her, out-organized her and out-raised her,” Mr. Wilhelm said. “I know organizational excellence when I see it, and the Obama campaign, win or lose, will serve as a model” of execution of strategy, message discipline, application of new technology and small-donor fund raising.