Gavel Grab: Partisan Judicial Elections Proposed for Montana

"A proposed referendum for the 2012 ballot in Montana would require candidates for district court judgeships and the state Supreme Court to run with partisan labels.
Currently, the state’s judicial elections are nonpartisan."

http://www.gavelgrab.org/?p=18073 

Why would any voter want to elect a partisan judge-- it suggests that the judge is biased politically when deciding cases.