The issue has been 'lurking/waiting in the wings' [=it has been waiting to be dealt with] for several years.
He's known as a comic actor, but he's 'spreading his wings' and trying a serious role in his new movie.
His nomination is supported by the party's 'left wing' but opposed by the right wing.
(..) - What do you think of me? - As of a man faithful and honourable - I would fain prove so But what might you think if I had seen this hot love on the wing... As I perceived it, I must tell you this, before my daughter told me What might you, or my dear majesty the queen here, think... (..)2015 Hamlet