A New Justice and a New Term for a Court in Transition

The US Supreme Court began its first full term today. Justice Sonia Sotomayor, who's replacing retired Justice David Souter adds a new face to America's highest court, though it's not clear she'll make much of a difference on major decisions. Conservatives still dominate five to four, with Anthony Kennedy the bouncing ball on constitutional questions and precedents. If Chief Justice Roberts goes ideological, decisions on gun rights, religion, campaign spending and executive power could be legal blockbusters. Is he more likely to guide the court to "incremental" rulings less likely to be overridden while Congress is controlled by the Democrats?