Conversation so far:
What are Joe Biden's characteristics as Senator?
During his years as a senator, Biden amassed a reputation for loquaciousness, with his questions and remarks during Senate hearings being known as long-winded
Was Joe Biden likable as Senator?
Does Joe Biden have a lot of friends in politics?
Yes; some of Joe Bidens policitian friends have included John McCain, Chris Dodd, President Barack Obama
When did Joe Biden become Senator?
Joe Biden was sworn into Senate office on January 5, 1973
What state was Joe Biden a Senator for?
Joe Biden was a Senator for the state of Delaware
Did Joe Biden get re-elected as Senator?
Following his initial election in 1972, Biden was re-elected to six additional terms, in the elections of 1978, 1984, 1990, 1996, 2002, and 2008
Do Joe Biden's peers have good things to say about him?

Question: When did he get re-elected?
Self-contained rewrite: When did Joe Biden get re-elected?