First off there is no such thing as a “Dimocrat”. As I said before that is a fantasy created apparition pulled from the dark nasty swirling cesspools of the OP’s subconscious.
Second the First Amendment speech of neither Obese Donald nor whack job Rudy Giuliani would be stifled or abridged by either Networks refusing to book whacky Rudy or Twitter suspending Obese Donald’s twitter account as is indicated in your separate links is being asked by Biden’s Campaign and by Senator Kamala Harris.
Odd thing about those requests, they are exercises of those folks free speech as well.
Obese Donald and whacky Rudy could still say anything they wanted, no one would be silencing them, they both could still petition government for a redress of their grievances.
No one though is guaranteed a venue, belonging to others, by the First Amendment in which to speak, tweet, vent, rant, or otherwise communicate.
First Amendment: Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.