There are 2 liberals appointed by Clinton on the court. All the past and present liberals with the exception of Breyer and Ginzburg going back to Ford have been appointed by Republican presidents, and including two “moderate” Justices appointed by Reagan, Kennedy and O’Connor who voted more with the liberals than the conservatives. Your chances of getting conservatives from a Republican President are not good to start with; from a liberal Republican President, virtually none.
I see little to gain favoring a sure thing that I won’t like versus a possibility I won’t like. Hannity is on the radio now making this exact point.
And, even closer to no chance when we're talking about a liberal Republican that will be presiding over a shrinking Republican minority.