Michigan Rep. Bill Huizenga is running in 2010 for the 2nd Congressional District seat held by U.S. Rep. Pete Hoekstra.
Huizenga is officially announcing his candidacy Tuesday morning in Zeeland.
Hoekstra was re-elected to his ninth House term last month. The 55-year-old Holland Republican announced Monday that he won't seek out the seat in 2010 and may instead run for governor that year.
Huizenga ran three successful re-election campaigns for Hoekstra, whose district includes all or parts of 11 counties in western Michigan.
The 39-year-old Republican says he knows it's early to announce a congressional campaign, given that Hoekstra just won his next two-year term.
But Huizenga says he had to clear the air about his plans.