Agree, the problem for the Republicans is a fairly long standing one - the drift ever further rightwards has been a feature since the Bush Junior and perhaps even Bush Senior and his drug dealing activities.
The only thing that has played for the Republicans for a long time is that their support has been more politically engaged and turn out to vote - and that has balanced out the change in demographics. Now that minorities have been elected to higher office, and they can also see the effects of minority representation we may well see that the shrinkade in Republican demographics is terminal.
The Republican demographic has been shrinking for a long time whilst the Deomcratic one has been increasing, both will continue to do so, their response has been to recruit and energise those even further out to the right, groups and individuals who would likely not be interested in Republicanism or even politics ten or more years ago.
Republicans have replaced their usual membership and support as it has died off through old age, they are now dependent upon the far Right, it is arguable that without the far right they hardly exist at all, and certainly would not have the numbers to have much effect.
Think about what we’ve had, the tea partiers, swiftboaters, birthers, now we have MAGA and add in all the social media tools along with Fox media.
Republicans, by their actions, have demonstrated they cannot gain or retain power through democratic means alone - use of voter supression, ballot challenge and thug bully boys all demonstrate that the older version is currently not a real force, the only thing they have to use is extremism - they are dependent upon it.
Republicans have fought line by line against the most important social measure and effectively hobbled full implementation of universal healthcare - Covid has really brought that home to a whole tranch of the voting population in a most direct manner.
They have pandered to the moneyed classes against the population - this they have done over generations but never has it been more evident than today.
Yet they got a higher vote than they ever did - it will be interesting to see if it represents a high water markl.
Sharper minds in what is left of the rational Republican Party will already be deciding if their whole organisation needs to be poltically relocated - but for me I think it might be too late, at least for the next two or four terms