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Priebus got his start in GOP politics as the chairman of a congressional district organization. He later became chairman of the Wisconsin state Republican Party, then won election as chairman of the Republican National Committee. After Donald Trump
Trump fired Priebus in July 2017, though Priebus stayed close to the former president through his term. He is also a close ally of top Wisconsin Republicans former House Speaker Paul Ryan
He would likely face a competitive Republican primary. Former Lt. Gov. Rebecca Kleefisch (R) has begun laying the groundwork for a potential campaign and State Senate President Chris Kapenga (R) has hinted at a potential run too.