State Sen. Jamie Eldridge has managed to liven up a quiet August on Beacon Hill.

The Acton Democrat shared some thoughts on Democratic Party politics with an email to fellow Bernie Sanders supporters that made its way into the hands of the Globe's Jim O'Sullivan. That led to a front-page story in the Globe headlined, "Democrat tries to nudge state party left; Senator wants some lawmakers voted out."

Eldridge says in this week's Codcast that the email was in response to the frustration many progressive activists felt with the national party as well as with "the Democratic party and Democratic legislators in Massachusetts." He says his main message to them was, don't break off and join a third party but redouble their efforts to push a progressive agenda joining their local town or city Democratic committee or consider actually running for elected office. There are "plenty of conservative Democrats who have been elected, unchallenged, for years if not decades, including at the local and legislative level," he wrote.