1.
The Mitt Masta is in the Hizzy. There are no words.
2.
I don't even know how you have a rap battle with neither raps nor rappers, but this video succeeds.
3.
This is a pretty typical Obama v Romney battle rap video.
4.
There's also a subgenre involving dancing.
6.
Aaand the obligatory Gangnam Style Dance Battle
7.
And then there's this. It defies logic. The actual battle rap starts at the 5:15 mark, but the cartoon is amazingly weird.