Yes, West Virginia, there is a special Senate election this year, or at least the prospects look quite likely:

West Virginia’s attorney general says Gov. Joe Manchin can put the late Robert C. Byrd’s Senate seat on the ballot this November . . . Manchin may now call a special legislative session to settle details such as candidate filing and party nomination deadlines. Manchin will appoint someone to fill the vacancy in the meantime. The Democrat says he may run for Byrd’s seat, but won’t have himself appointed.

A weird wrinkle of the potential matchup of the biggest name on each side? Democrat Manchin is pro-life; Republican Shelly Moore Capito is largely pro-choice.