What does it mean? Twitter has some theories:
G-O and Bingo was his name-o! “@ChuckGrassley: N”
— Josiah Neeley ? (@jneeley78) October 4, 2012
"@ChuckGrassley: N" @ChuckGrassley Pretty racist letter. #debate
— GalvestonCounty Dems (@GalvCountyDems) October 4, 2012
https://twitter.com/KevinWGlass/status/253682522607726592
Profound “@ChuckGrassley: N”
— Shawn (@HawkeyeShawn) October 4, 2012
@ChuckGrassley today's #debate brought to you by the letter…
— Andres Jauregui (@dutchvowels) October 4, 2012
wow did @ChuckGrassley just tweet the N word??????????????
— FIPSmode Squad (@anthonypants) October 4, 2012
https://twitter.com/diymediadotnet/status/253682379653271552
obama RT @ChuckGrassley: N
— Gavin Aronsen (@garonsen) October 4, 2012