A rambling or incoherent speech made by a politician, which makes as much sense backwards as forwards.
This word is a pun on the word "palindrome" (a sentence which reads the same backwards as forwards), constructed from Sarah Palin
] (the 2008 Republican candidate for Vice President) and "drone" (monotonous speech).
Here's an example of a palindrone, as uttered by Sarah Palin herself: "I know that John McCain will do that and I, as his vice president, families we are blessed with that vote of the American people and are elected to serve and are sworn in on January 20, that will be our top priority is to defend the American people." (Interview with Charlie Gibson, 9/11/2008)
Did you hear that clip of George Bush on "The Daily Show" last night? It was one long palindrone.