The true threat to Democracy is the party in which Harris publicly said, "we have to burn down the Republican Party."
Getting rid of political opposition means, no Democracy."
All One-Party-Only governments (Theocracies, Marxist, Oligarchies, Military Juntas and despotic ones), without fail, become: authoritarian, persecutory, tyrannical and outright murderous to its own people who don't agree with their politics.
Always allow for opposition, but with a military that will step in, should a party that takes control and subverts the people's freedoms and right to choose.