Question: Which U.S. Senator won re-election to a third term in which  James Charles Slattery was the Democratic candidate in 2008?
Sentence (from "United States Senate election in Indiana, 2010"): The 2010 United States Senate election in Indiana took place on November 2, 2010, alongside 33 other elections to the United States Senate in other states and elections to the United States House of Representatives and various state and local elections to fill Indiana's class III United States Senate seat.
Relevant evidence: No