This week's announcement by Governor Charlie Baker (R-MA) that he won't see a third term threw Massachusetts politics into a state of upheaval. On the Democratic side, current candidates Ben Downing, Danielle Allen, and Sonia Chang-Diaz now face a bevy of prospective new rivals, including former Boston Mayor Marty Walsh and former Boston mayoral candidate Annissa Essaibi George — which creates new pressure on another potential Democratic candidate, Attorney General Maura Healey, to finally make up her mind. On the Republican side, former state Rep Geoff Diehl could get company soon too, though the Mass GOP's allegiance to former President Trump and Trumpism seems deeper than ever. In the first episode of GBH News' Talking Politics, Political Reporter Adam Reilly unpacks it all with GBH State House Reporter Mike Deehan, Bay State Banner Senior Editor Yawu Miller, and Boston Globe Columnist Joan Vennochi.