If Democrats care so much about democracy and voter rights, why are they actively trying to keep RFK Jr. off of ballots?

Democrats like to attack Republicans for voter suppression while actively trying to keep candidates off of ballots, which in it self is a form of voter suppression. Yes, not allowing voters to vote for a particular candidate is a form of voter suppression.
If Democrats care so much about democracy and voter rights, why are they actively trying to keep RFK Jr. off of ballots?
If Democrats care so much about democracy and voter rights, why are they actively trying to keep RFK Jr. off of ballots?
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