Ronald Dworkin finds it "regrettable that the general public takes so little interest in the Supreme Court" and thinks that's why the Obama campaign "rarely mentions" it.

Here's his big essay in the NYRB.

I think the Obama campaign avoids that issue because its research says that people want judges that interpret the Constitution based on text and original meaning/intent. Obama's vulnerable on the Supreme Court question. He benefits from whatever lack of interest can be maintained.