GREAT FALLS, Mont. -

The Montana Democratic Party is endorsing Sen. John Walsh in the Democratic primary for the U.S. Senate seat over two other candidates.
    
Montana Democratic Party rules state the party is prohibited from spending money or giving other support to any candidate in a statewide or federal primary unless two-thirds of the party's executive board votes to support a "proven incumbent."
    
Party spokesman Bryan Watt says that Walsh is not only the incumbent, but is "the only true Democrat" in the race. He says former Lt. Gov. John Bohlinger served six terms in the state Legislature as a Republican and was listed as a Republican when he ran for lieutenant governor.
    
Watt also points out that Wilsall rancher Dirk Adams has made campaign donations to Republican candidates.