As a Republican, he was first elected on October 7, 2003, in a special recall election to replace then-Governor Gray Davis. Schwarzenegger was sworn in on November 17, to serve the remainder of Davis's term. Schwarzenegger was then re-elected on November 7, 2006, in California's 2006 gubernatorial election, to serve a full term as governor, defeating Democrat Phil Angelides, who was California State Treasurer at the time. Schwarzenegger was sworn in for his second term on January 5, 2007. In 2011, Schwarzenegger completed his second term as governor.
Is there an answer to this question (If it cannot be answered, say "unanswerable"): What date marked the start of Schwarzenegger's second gubernatorial term?
January 5, 2007