Boston City Councilor Ayanna Pressley and Congressman Mike Capuano clashed recently in a debate sponsored by UMass Boston, the Boston Globe, and WBUR; in a few days, they’ll meet for another tete-a-tete hosted by WGBH News’ Jim Braude. Which parts of the incumbent’s and challenger’s pitches are working, and which are falling flat? And what — if anything—should Capuano and Pressley do differently in the race’s final weeks? Adam Reilly and Peter Kadzis talk it over with the Globe’s Joan Vennochi and Yawu Miller of the Bay State Banner — and delve into some state-level primary fights that also pit progressive incumbents against progressive challengers.