This response seems to be spinning a narrative that Democrats have a significantly broader support in the US than Republicans, but I think that is somewhat misleading. Independents have stronger support than either of the major parties.
I am in no way suggesting that US Democrats have broader support.
I am stating that the US Republicans do not have the support of "half of the US"; either by half of total population, half of eligable voters, or half of registered voters.
US Independents should have stronger support but that's not really going to put much of a dent in what's iteratively evolved to become a two party bicameral political system thanks to the shortcomings of repeated "First past the post" voting.
What was a bright idea hundreds of years ago hasn't scaled well and converged to unrepresentative gerentopoly.
> but as a simple matter of factual data it's been two decades since US Republicans could claim a slight edge on US Democrats in the popular vote (percentage of entire voting population) and four decades since they had any significant support.
That certainly comes across as you suggesting that Democrats have broader support. Intentional or not, I found your comment misleading by not incorporating the substantial size of independents.
Here is some data going back to at least 1988: https://news.gallup.com/poll/388781/political-party-preferen...