Those who push for a Third Party have NEVER won an election in their lives.
They have NEVER had a political or legislative victory.
They are acting out of emotion.
It is a stupid idea.
Say what you will about a 3rd party approach, the approach of blindly voting “R” has gotten us exactly ... nowhere. The government expands unimpeded, in terms of size, scope, power, and unaccountability. The Republican Party has not even proven itself worthy of being called a “speed-bump”. You cite logic and “mathematics”, but reality and history show something quite different.
Until there is a valid, unified, opposition party this country will continue to be transformed, as it has for 50+ years.