US doesn’t have a centrist or left leaning party. It is either centre right or a far right party. If a party is only counting the right wing vote it is but obvious that a far right would be much more appealing than a centre right.

That leaves the centrist and left leaning populace without a voice. People can berate them for not choosing a right wing party to avoid far right getting power. But that just glosses over the fact that there is no representation of them in either direction.