You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "Al Franken's 2008 United States Senate election opponent had previously been a member of which political party before becoming a Republican?" whose answer is Democratic-Farmer-Labor Party (DFL).
Each document should contain about 30 words, and these documents should contain useful information.

Query: Al Franken's 2008 United States Senate election opponent
Useful Output:

Doc 1: Minnesota Democrat Al Franken's narrow, 312-vote victory in 2008 over incumbent Sen. Norm Coleman may have come as the result of people being allowed to vote
Doc 2: After millions of dollars and 19 months pursuing a U.S. Senate seat, comedian Al Franken nailed down the Democratic nomination in his
Doc 3: The comedian easily beat six other candidates to set up a showdown with the incumbent Republican senator, Norm Coleman.
Doc 4: Democratic Sen. Al Franken's political career is no laughing matter. Still, his comic beginnings have impacted his job as U.S. senator in
Doc 5: Minneapolis election judges may be asked to take the stand in Minnesota's U.S. Senate election contest. But many election judges say it's hard to remember