ALBANY — In 2014, while cruising to re-election, Gov. Andrew M. Cuomo’s efforts to help his fellow Democrats were, to be polite, understated.

The governor, known for often working closely with Republicans in Albany, did spend some money on behalf of Democratic candidates and endorsed a few just before the election. But he did little stumping for anyone other than himself, and all of the candidates he endorsed lost.

But in recent days, Mr. Cuomo — perhaps mindful of criticism that he has not been particularly effusive or effective in his support of Democrats — has practically become a campaign carnival barker.

On Monday, Mr. Cuomo endorsed two of his party’s State Senate candidates on Long Island.

The governor also has three Democratic fund-raisers planned between now and Sunday, including a big-ticket event in Manhattan on Tuesday. The beneficiary of that appearance will be the New York Senate Democrats, who have long growled about not holding the majority despite having enormous advantages in voter registration statewide and, technically, having more members in the 63-seat chamber. (More on this later.)