A Republican has kicked off a campaign for governor of Massachusetts in 2022, but probably not the one you’re thinking of. Former state representative and 2018 U.S. Senate candidate Geoff Diehl co-chaired President Trump’s 2016 Bay State campaign. So far, Governor Charlie Baker hasn’t said whether he will seek a third term. Diehl joins a field that includes three Democrats — Harvard professor Danielle Allen, former state Senator and Pittsfield native Ben Downing, and State Senator Sonia Chang-Diaz. We speak with Tim Vercellotti, director of the Western New England University Poll and professor of political science.