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 "Jim Slattery"): He served in the U.S. House of Representatives from 1983 to 1995 representing Kansas's 2nd congressional district as a Democrat, was the Democratic nominee for governor in 1994 and was the Democratic candidate for U.S. Senator in 2008.
Relevant evidence: Yes