late train n.— «Within a month after Clements lost, Mark White, the victor, held a series of “get on board the late train” fund-raisers that produced $3 million from many of the original Clements backers.» —“Economic Ills...
late train n. post-election support for a candidate, especially when switching from a losing candidate to a winning one. Editorial Note: Common in constructions like “take/get on/board/catch the late train.” (source: Double-Tongued...