Assemblyman Kevin S. Smardz announced Thursday he is not seeking re-election.
The Hamburg Republican cited personal reasons for withdrawing from the race, which has become crowded with five other candidates expressing interest.
"Circumstances in my personal life require my attention, and I feel it would be unfair to the hardworking taxpayers I represent if I was unable to completely commit to this campaign and another term in office at such a critical juncture for our state and our economy," Smardz said in a statement.
Smardz was elected two years ago to represent the 146th Assembly District. As a result of redistricting, he was looking to run in the 147th District.
The newly configured 147th District includes southern Erie and Wyoming counties, but not Smardz's residence in Hamburg. The former Hamburg town councilman would have had to move into the district had he been elected.
Erie County Republican Chairman Nicholas A. Langworthy said that even before Smardz dropped out, the party had decided to hold an open primary and not endorse a candidate in the race. Wyoming County GOP officials had decided to do the same thing.
"It is obviously a crowded field still, even without the assemblyman," Langworthy said.
Those expressing interest in the seat include David J. DiPietro, former East Aurora mayor; Daniel J. Humiston of Buffalo, owner of the Tanning Bed chain; Christopher M. Lane of East Aurora; David P. Mariacher of Elma; and Douglas Patti, Attica supervisor.
Smardz, 36, thanked his constituents and supporters.
"I have always considered it a great honor and privilege to serve the taxpayers of Western Ne York," he said. "However, my family comes first."