Behind-the-scenes, "the shadow campaign" is underway for U.S. Sen. Johnny Isakson's soon-to-be-vacated seat.

In this episode of the Politically Georgia podcast, host Greg Bluestein and AJC Washington correspondent Tamar Hallerman discuss the potential Republican appointees Gov. Brian Kemp could assign to Isakson’s seat following his retirement, as well as potential Democratic challengers that could run come 2020. Bluestein and Hallerman also discuss Isakson’s return to the U.S. Capitol and more.

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U.S. President Donald Trump, center, attends the Gaza International Peace Summit in Sharm el-Sheikh, Egypt with, from left, Paraguay's President Santiago Pena, Indonesian President Prabowo Subianto, Cyprus' President Nikos Christodoulides and Hungary's Prime Minister Viktor Orban, Monday, Oct. 13, 2025. (Suzanne Plunkett/AP)

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Mathew Palmer, a former Delta Air Lines employee, at his home in Atlanta on Thursday, Oct. 9, 2025.  Palmer was fired less than two weeks after writing a post on social media about the assassination of conservative activist Charlie Kirk. (Natrice Miller/AJC)