BOISE -- The Idaho Supreme Court has sided with the Secretary of State's office and rejected a lawsuit from would-be legislative candidate Matt Yost.

Yost, a Democrat, sued after Secretary of State Ben Ysursa's office said he couldn't run for the District 15 seat against incumbent Republican Sen. John Andreason because he wasn't a registered voter in the district for a full year before filing for office.

In a ruling handed down Tuesday, the Idaho Supreme Court denied Yost's petition, saying there was another speedy legal remedy available under Idaho law.

In a letter to supporters Yost said he was disheartened and would not try to fight the case in the lower courts.