Howard Wolfson and Karl RoveHoward Wolfson, top, will join Karl Rove as a contributor on the Fox News Channel. (Photos: Top, Karin Cooper, CBSs Face the Nation, via Associated Press; Jennifer Simonson/Star Tribune, via Associated Press)

Howard Wolfson, who was a top strategist for the presidential campaign of Senator Hillary Rodham Clinton, is going where some Democrats were unwilling to go during the early days of the election season: the Fox News Channel.

The network is expected to announce as early as Tuesday that it has signed Mr. Wolfson as a contributor who will appear regularly on its programs.

Mr. Wolfson is joining a network that Democrats shunned for a time, complaining that its coverage was unfair. But aides to Mrs. Clinton came to view Fox News as distinctly fair to her in a news media climate that they believed favored Senator Barack Obama.

I thought that Foxs coverage during the primary was comprehensive and fair and evenhanded, Mr. Wolfson said Monday in a telephone interview from Liverpool, England, where he was vacationing. Its a huge audience, and it is important to have a strong, progressive voice on the network.