Question: What  attorney and an American politician of the Democratic Party in Montana was was challenged in the Democratic primary by Leif Erickson in an  election in Montana ?
Sentence (from "Texas Democratic primary and caucuses, 2008"): The indecisive results of Super Tuesday, and the fact that Texas had the largest number of delegates among the states remaining on the Democratic primary calendar, resulted in the Texas primary receiving significant attention from both the Hillary Clinton and Barack Obama campaigns.
Relevant evidence: No