For the first time in more than four decades, incumbent Boston City Councilors failed to make it past the preliminary election. Ricardo Arroyo and Kendra Lara — whose campaigns were both mired in controversy — both came in at least 10 points behind the second-place finisher in their race, knocking them off of the general election ballot.

What does this rare outcome signal from voters, and how will Arroyo's and Lara's progressive supporters respond? Politico's Lisa Kashinsky and CommonWealth Magazine reporter Jenn Smith join host Katie Lannan to discuss.

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You can watch this discussion right now or catch the full show at 7 p.m. on GBH 2. Subscribe to the  GBH News’ YouTube channelto get updates on future segments and episodes.