Al Franken's Senate vacancy is hardly Minnesota's first. Check out this list.

Al Franken’s announced resignation from the U.S. Senate will create a rare vacancy in a crucial link between Minnesotans and the nation’s highest tiers of power.

Wait, it’s not as rare as you might think.

http://www.twincities.com/2017/12/08/al-frankens-senate-vacancy-is-hardly-minnesotas-first-check-out-this-list/