Goo Goo (Good Government)

"Goo Goo" is what a baby says. It also stands for "good government," from 1894-95.

28 November 1894, Washington Post, pg. 4:
The New York Times complains because Mr. Morton has signified his intention of appointing Republicans to office. The Times ought to know that Mr. Morton is neither a Goo Goo nor a Hoo Hoo.

7 July 1895, New York Times, pg. 3:
Mr. Sullivan did not want to have us arrested, and he said so to the Justice, but he was egged on by the "Goo Goos" -- the reformers -- to do so.