The Supreme Court is important. But it is not all-important. Dr. Mohler comes very close to quoting Jesus on this matter in precisely the way I have: "What does it profit a man to gain the whole world and lose his own soul?
The principle applies to the Supreme Court, too.
Dr. Moeher's distinction between single issue-disposive and single issue-sufficient voting. As he points out, abortion (and by extension the Supreme Court) are single issue-disposive issues. But they are not single-issue sufficient.