Charleston, South Carolina (CNN) – The race for the open U.S. House seat in South Carolina's special election Tuesday showcases two very different candidates with two very different campaign styles.

Democrat Elizabeth Colbert Busch is criss-crossing the district in a fully wrapped tour bus with her name plastered along the outside. It's a look that evokes a presidential campaign. She travels with an entourage that, this weekend, included Jon Bauman, better known as Bowzer from the rock group Sha Na Na. He goes with her to rallies and sings a few chords from "Blue Moon," ending with "Vote for Colbert Busch" in his booming low voice.
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