The Chairman of the Clark County Commission has officially filed to run as a Democrat for Nevada governor. Steve Sisolak entered the race yesterday, filing his paperwork with the Nevada Secretary of State. Sisolak is expected to face a Democratic party primary challenge from Clark County Commissioner Chris Giunchigliani (joon-kihl-ee-ahn-ee). The campaign to replace Governor Sandoval is expected to also draw several GOP candidates, including state Attorney General Adam Laxalt and state Treasurer Dan Schwartz. Schwartz has filed, Laxalt has not.