The party will pick its secretary at a congress two weeks from now -- which will also choose a new party chair, who is to take over as prime minister from Matti Vanhanen. That conference begins in Lahti on Friday, June 11.
Korhonen said that a number of Centre Party district organisations have asked him to run for another term. He mentioned those in Southern Ostrobothnia, Kainuu and Lapland.
Korhonen says he is not worried about the criticism he has faced over irregularities in the party's election funding -- which are the responsibility of the party secretary. He has been in the post for four years.
He said the party has made public everything related to its campaign fundraising.
He faces two challengers: Timo Laaninen, editor-in-chief of the party newspaper, Suomenmaa, and Simo Sorsa, chair of the municipal council in the town of Askola, near Porvoo.
Born in Joensuu, eastern Finland, in 1965, Korhonen began his career in the Centre's Southern Ostrobothnian organization.