RightNow GREAT FALLS, Mont. (AP) — The leading candidates for Montana's only congressional seat tangled Saturday over money, including taxes, campaign financing and $240,000 in investments by the Republican candidate that financial disclosures link to index funds with substantial holdings in Russian firms that are under sanctions by the U.S. government. The investments gave Democrat Rob Quist fresh ammunition to lob at Greg Gianforte during their only televised debate before the May 25 special congressional election.