Under a doctrine of free speech, politics has no "clearly false messages".
Free speech and the correctness of a message are orthogonal concerns - the Earth is flat is a false claim no matter whether there is free speech or not and neither supporting nor opposing arguments have any bearing on that fact, they may however influence other people accepting or rejecting it.
Free speech and the correctness of a message are orthogonal concerns - the Earth is flat is a false claim no matter whether there is free speech or not and neither supporting nor opposing arguments have any bearing on that fact, they may however influence other people accepting or rejecting it.