So — Massachusetts’ fifth congressional district is throwing a special election.

This in itself isn’t news. Earlier this year, Ed Markey, who had long represented Eastern Massachusetts in the House of Representatives, was elected to the Senate to fill the seat that John Kerry vacated when he was appointed Secretary of State. By law, Governor Deval Patrick has one hundred sixty days to line up a replacement. And so, on December 10, folks in Middlesex, Suffolk, and Worcester Counties will come out, cast votes, and send someone new to the least popular institution in the United States.