John Nichols of The Nation is reporting that Glenn Jacobs, a WWE professional wrestler who is best known by his ring name Kane, is considering a primary challenge to Sen. Lamar Alexander (R-TN).
Jacobs's political views are not well-known, however, since he's been named as a potential primary challenger to an incumbent Republican U.S. Senator, he's probably a Tea Partier.
Jacobs, if he does run, wouldn't be the first person affiliated with WWE in any way to attempt to run for U.S. Senate. Former WWE CEO Linda McMahon has done so twice in Connecticut, both times winning the Republican nomination before losing to Democratic opponents in open-seat races (Richard Blumenthal in 2010 and Chris Murphy in 2012).
If Jacobs (or any other Republican primary challenger) defeats Alexander, given that it's Tennessee, Democrats don't have much chance of pulling off an upset unless they nominate a strong candidate. The Democratic bench in Tennessee is very thin and the state has become increasingly Republican in recent years. The only Democrat that I know of who has considered a 2014 run against Alexander, Jacobs, or whoever else wins the Republican nomination in the Tennessee U.S. Senate race is Joe Brown, a TV judge who was previously a real judge in Shelby County, Tennessee.