There are many reasons for classical liberals to oppose Donald Trump in the general election, but Supreme Court appointments are not now one of them. We can hardly be confident that his appointments will make America great, but we can be pretty confident that Hillary Clinton’s will end the current project of making the Supreme Court a court of law rather than a dynamo of Progressive politics.
After Donald Trump’s announcement of eleven judges whom he would consider appointing to the Scalia vacancy, many libertarian and conservatives commentators still doubted that Supreme Court appointments were a good reason to support Trump in the general election. They conceded that that those on his list were generally excellent candidates, but suggested that Trump could not be trusted to appoint people like them.
And they certainly have a point: on many issues Trump points in no direction more consistently than a weathervane. Moreover, he has supported a variety of legal causes, like property condemnation on behalf of private development, that would not likely fare well with the kind of justices he has promised to appoint.
Nevertheless, I believe there is a substantial probability, even a likelihood that Trump would follow through on his judicial promises.