Centrist? Undecided? Non-existent.
This is the story of the centrist, undecided voter.
I personally don't think there are any undecideds. I don't see how anyone can truly be so abysmally stupid or ridiculously naive as to not see a huge difference between Pumpkin and an actual human like Biden, unless they are in a vegetative state. And those folks aren't answering polls.
Any response of "Undecided" in a poll, I presume to mean, "I'm voting for Pumpkin because he enables my racism. But I'm ashamed to say so to this guy taking a poll."