Education
Suffolk University; Suffolk University Law School.
Suffolk University; Suffolk University Law School.
A staunch supporter of the death penalty, Slattery is best known for reversing his vote and sinking death penalty legislation. He was a candidate for Lieutenant Governor of Massachusetts in 2002, but lost the Democratic nomination to Chris Gabrieli. He was a candidate for Mayor of Peabody in 2005, but lost to incumbent Michael Bonfanti.
In 2012, John announced his plans to run for Massachusetts State Senate.
Slattery lost the 2012 race to Joan Lovely by an overwhelming number of votes.