One of the rare songs of this ilk to outlive the campaign it was created for was "Charlie on the MTA".

Did he ever return, no he never returned,
And his fate is still unknown.
He may ride forever neath the streets of Boston,
He's the man who never returned.

Popular through the 70's at least. Greatly singable chorus and used humour to make its point. The issue was a fare increase on the Boston transit system whereby passengers would have to pay another nickel or dime when EXITING the train. So the premise the song is built on is, what becomes of the hapless commuter who loses his last dime and can't get off? We find out.

"Charlie's wife goes down to (whatever) station
Every day at half past two.
Through the open window she hands Charlie a sandwich
As the train comes whistling through."

And saves the campaign slogan for the last verse:

So fight the fare increase, vote for Walter O'Brien
And get Charlie off the MTA!

Did he ever return, no he never returned...etc.

W-O