Unsurprisingly, as per usual, it will be 100% left / right politics.
And unsurprisingly, BOTH sides have switched their positions on when the replacement should be selected vs. all the angry rhetoric in 2016. BOTH sides "just happen" to want the selection to be when they believe it will help them get the conservative or liberal justice in place to serve their agenda.
And of course, BOTH sides are arguing why their position is right this time. When so much clown-car like stuff like this goes on with NEITHER side having the gumption to stick with core principles over time as a PRINCIPLE, vs. short term political convenience, I'm surprised a lot more voters don't refuse to tow the political line of either party, and just vote each race based on their overall perception of the best candidate. (Disclosure: that's what I've done for a good two decades now. The TOTAL JOKE that was the Bush Vs. Gore brawl, when every SINGLE court case was voted, not on legal principle, but along strictly political lines of which party the judge belonged to, pretty much did it for me respecting the courts or the parties, overall. The last straw.)
The major courts in this country are so FAR from their supposed apolitical role, that it's pathetic. They don't even TRY any more to put a veneer of decency on the role of the courts (re doing the right thing, re legal principles -- just pure politics, overall.
Given the track record of the perma-doomer blogs, I wouldn't bet a fast crash doomer's money on their predictions.