Topeka Senate President Dave Kerr is expected to join those seeking the Republican gubernatorial nomination. An announcement was expected Tuesday or Wednesday.
Kerr, 57, told reporters last week he wanted to be governor. He formed an advisory group to explore the viability of a campaign, which would come less than three weeks before the June 10 filing deadline.
Details of the announcement were being completed Friday afternoon. Kerr, Hutchinson, was unavailable for comment at his home or through his Statehouse office.
Kerr would join three other Republicans in the campaign: State Treasurer Tim Shallenburger, Wichita Mayor Bob Knight and former Eudora school Supt. Dan Bloom.
An investor, Kerr was elected to the Senate in 1984. He was Ways and Means Committee chairman until he became the chamber's presiding officer last year.
Insurance Commissioner Kathleen Sebelius is the only announced Democrat in the race.
State Republican Chairman Mark Parkinson said he was unaware of other potential candidates other than Kerr.
"I think that the field is set," Parkinson said. "It's either Bob and Tim or Bob, Tim and Dave. If there's anyone else they aren't talking to me."
He said he had not spoken to Kerr since earlier in the week, but added Kerr did say he was "very interested" in the race and still was exploring his chances.
It is not known if Kerr runs who would be his lieutenant governor candidate.
Shallenburger has named David Lindstrom, a former Kansas City Chiefs player and Overland Park businessman, as his running mate.
Knight picked House Speaker Kent Glasscock, who abandoned his gubernatorial bid last fall to become Atty. Gen. Carla Stovall's running mate. Stovall dropped out and Glasscock joined Knight.
Bloom will team with son Eric, 23, a Kansas University senior.