Former Massachusetts State Treasurer and Democratic nominee for governor Shannon O'Brien and Charlie Chieppo, principal of Chieppo Strategies, senior fellow at the Pioneer Institute and adjunct professor at Suffolk University, joined Boston Public Radio on Tuesday to discuss all things politics.

They touched on the latest headlines relating to an impeachment inquiry against the president, staff shakeups in Sen. Elizabeth Warren's campaign for president, the results of an independent audit into the Massachusetts RMV, and whether Rep. Joe Kennedy will face Sen. Ed Markey in a debate specifically about climate change.

Markey’s campaign has said that the 73-year-old senator and two of his other challengers — Shannon Liss-Riordan and Steve Pemberton — had agreed to a Nov. 18 debate hosted by the Environmental League of Massachusetts. However, the Kennedy campaign objected to the date, saying they don't want to begin debates until next year.

"This is the wheelhouse for Eddie Markey," said O'Brien. "I don't think he wins the name recognition, I think Joe Kennedy is probably better known in Massachusetts even than Eddie Markey, so I think he's smart to call for this because this issue is front and center right now and I think he's smart to try to bring that to the forefront."

"I don't think it's a huge issue, but I don't understand why [Kennedy] wouldn't just do it," said Chieppo.