Who is outside the mainstream?

Based on this report, it is Jeffords and the 24 Democrats who voted to filibuster Alito that are outside the mainstream, and not Alito:

Supreme Court Justice Samuel Alito split with the court's conservatives in a death penalty case on his first day on the court.

Handling his first case, Alito sided with five other justices Wednesday evening in refusing to allow Missouri to execute inmate Michael Taylor.

Chief Justice John Roberts and Justices Antonin Scalia and Clarence Thomas supported lifting an execution stay issued by an appeals court, but Alito sided with the majority in turning down Missouri's last-minute request to allow a midnight execution.