JEFF JACOBY: An election tsunami?

It’s not hard to understand why so many members of Congress come to regard incumbency much as medieval kings regarded the crown — theirs by divine right. The Economist noted recently that while 30 percent of Europe’s monarchs have been replaced since 2012, less than 4 percent of US House seats are seriously competitive in the November midterms. Kings and queens aren’t as hard to extricate as congressional incumbents.

I'd be happy if there is one, but I won't pin my hopes on it.