noun
perennial candidate; ever unsuccessful candidate
Used for someone who repeatedly runs for a position or award but never wins. Often carries a slightly sympathetic or ironic tone.
彼は万年候補で、今回も当選しなかった。
He is a perennial candidate and didn't get elected this time either.
あの俳優は万年
That actor is called a perennial candidate, but he might win an award someday.