Gov. Arnold Schwarzenegger is scheduled Thursday to deliver a State of the State address that is expected to be the most significant speech of his political career to date... (snip) Analysts suggested Schwarzenegger lost popularity because he pushed a much more conservative agenda than he had during the recall campaign in which he was elected and his initial year-plus in office. So with political strategists and his own inner circle -- including his most trusted adviser, Democratic first lady Maria Shriver -- insisting the governor must get back to the political center, the address will provide voters with their first...