There is no way of knowing that. The precedent with SCOTUS appointees has always been that it was designed for compromise by coming from the POTUS but having to be confirmed through the senate. The theory is that should mean, "You get to seat a justice, but if you're a liberal and the senate is conservative you'll have to compromise to find somebody that you can all live with."Let’s not pretend the Dems wouldn’t do the exact same thing if the shoe were on the other foot. If they had controlled the Senate in 2016, they would definitely have seated a Justice in an election year - and they would have had every right to do so. As Obama told us: “Elections have consequences “.
The spirit of our country's system was never supposed to be, "We have the numbers so f*** you if you don't like it." The whole thing was supposed to be built to prevent extremes on either side.
The country has not always been this partisan. Compromise is dying (if not dead already) and that's very worrisome. This is a great video that shows it in very simple terms.