State Controller Brandon Woolf plans to run for the office he took over last October when Donna Jones resigned following a serious traffic accident.
Woolf plans to make his official announcement Tuesday at the Idaho Capitol.
Woolf, who was appointed by Gov. C.L. "Butch" Otter to replace Jones, already has at least one prospective rival in the Republican primary election next May.
Todd Hatfield, from McCall, has filed documents indicating a potential run.
In running, Woolf has won the endorsement of his former boss.