"Holy Cow, my sister's running for Congress!" he exclaimed after describing the benefits of being a native South Carolinian (peaches, shrimp, and the most generous average humidity in America... 86%).
Being the serious broadcast journalist that he is, Colbert said he would not use his celebrity to endorse his "intelligent, hard working, compassionate and dedicated" sister, 'LuLu.' Instead, he decided to lend republicans a hand and revealed a tip on how to defeat her in an argument.
"Right after she makes a good point, repeat it back to her in a dumb voice," he said before giving a live example of how that would work in a debate.
Celebrity Couples of 2014 [PHOTOS]