No, not with almost a year to go before the inauguration. The Republicans had the majority in the Senate and could have denied Garland if they wanted to. But McConnell/Grassley did not even give him a hearing.

The Supreme Court should not be political. Garland is a moderate and would have made a fine Justice.

With at less six weeks until the election and four months until the inauguration why would they not keep their word?

Lindsey Graham (2016):

"I want you to use my words against me. If there's a Republican president in 2016 and a vacancy occurs in the last year of the first term, you can say Lindsey Graham said, 'Let's let the next president, whoever it might be, make that nomination,' " he said in 2016 shortly after the death of Justice Antonin Scalia. "And you could use my words against me and you'd be absolutely right."