Politico published a list in August 2013 of the five primaries to watch in 2014. Massachusetts' 6th Congressional District was included on the list. This proved true when Tierney lost his bid for re-election to Seth Moulton in the Democratic primary.
Vulnerable after the scandal surrounding his wife, Tierney barely managed to win re-election in 2012. In 2010, Patrice Tierney pleaded guilty to helping her brother file false tax returns in connection with his operation of an illegal offshore casino. Republicans criticized Tierney about his wife, alleging that he was fully aware of her conduct. He ultimately defeated Richard Tisei (R) by fewer than 4,000 votes — or 1 percent of the vote -- in the general election.Tisei, a former state house minority leader, ran again in 2014. He will face Seth Moulton (D) in the general election.