> so each was on its way already to becoming a majority party and entrenching itself. Gotcha. And WHEN was the last one?
No actually not at all. In every case where a new party came in and took over a majority party it had <1% support int he previous election. These new parties that come in and replace existing majority parties in 7 out of 8 of the cases all happened over the course of a single election. In the one outlier it was over the court of 2 elections.
> And WHEN was the last one?
Quite some while back, Its about a generation back, something like 80 years ago. Which again is to my point, the fact that it has happened 8 times already and has not happened **recently** means the underlying cause is something recent and not FPTP which we had through that entire time.
> My only point was that THIS election, a 3rd party vote is nothing but a not-D and not-R vote, because there is no 3rd party groundswell.
As stated in virtually all cases of a switch of parties there was no building "ground swell" in all cases the switch of party was abrupt and over the course of just a single election.
Moreover as stated earlier, its a pointless argument because there is no rational argument that a vote for a candidate that wins, particularly when your vote does not swing the outcome, has any more value than a vote for a canddidate that looses, again, when your vote wouldnt have caused the swing. Since votes never really come down to a single vote, your vote will never swing the outcome, so there is little incentive for you to pick a canddidate you dont like as much simply because you think they would win.