Blaine! Blaine! James G. Blaine.
The Continental Liar from the State of Maine!
And ......
Maw! Maw! Where's my Paw?
Gone to the White House! Haw haw haw!
The latter referred to Grover's fathering a child out of wedlock.
Jingles were a very important part of political campaigns back around this time - when my grandparents were born. Some would be set to a tune and published as single pages of sheet music, with little artistic embellishments around the edges.
The R R & R quote wasn't really a jingle. It was one line in a longwinded bloviation by one of the after-dinner speakers at a NYC fundraiser. Blaine & the other Republicans had had their brains so thoroughly numbed by the boring speech that they didn't hear the slur on Catholics, or else they would have certainly repudiated it right there, as they knew how important Catholic sensitivities were to keeping NY State in the GOP column to counteract the Solid South. But a member of the MSM ("newspaper reporter" in those days) was listening intently for anything that might be used to bring down the GOP. And he certainly found it. Huge headlines everywhere the next day.
Grover Cleveland was still a bachelor when he was elected but married during his first term. Supposedly the Baby Ruth candy bar was named in honor of his daughter Ruth.