The phrase "political comeback" refers to someone in politics who was previously in a prominent position or had influence but had lost it, reemerging and gaining their influence back or occupying a significant role again. Full definition
But the junior senator was not eager to tee off on her two fellow Democrats who are mounting political comebacks in the New York City elections this fall after being felled by sex scandals in recent years. (nystateofpolitics.com)
In 2011, Grayson launched his first political comeback bid by announcing a run for Florida's newly created 9th Congressional District. (freebeacon.com)
Former Washington, D.C. Mayor Marion Barry — the prototype for political disgrace and political resurrection — tells Gut Check that he can relate to the attempted political comebacks of former New York Gov. Eliot Spitzer and former Rep. Anthony Weiner. (politicalticker.blogs.cnn.com)