Erie County District Attorney Frank Sedita III said Thursday he will run for a state Supreme Court seat this November.

Sedita’s attempt to move from the D.A.’s office to the bench has been widely anticipated in Buffalo political circles for months under a planned deal where local Republicans will cross-endorse Sedita, a Democrat, and Democrats will cross-endorse Emilio Colaiacovo, a Republican, for the other seat that is being contested.