@mysteryman,
Clinton was again elected governor and kept his job for ten years.
Bush served as Governor of Texas from 1995 to 2000 before being sworn in as President on January 20, 2001. (2 years of which were spent campaigning for president.)
Obama graduated Columbia University and Harvard Law School, where he served as president of the Harvard Law Review, worked as a community organizer and practiced as a civil rights attorney before serving in the Illinois Senate from 1997 to 2004. He taught constitutional law at the University of Chicago Law School from 1992 to 2004, elected to the Senate in November 2004 with 70% of the vote. He helped create legislation to control conventional weapons and to promote greater public accountability in the use of federal funds, helped create legislation regarding lobbying and electoral fraud, climate change, nuclear terrorism, and care for returned U.S. military personnel. After announcing his presidential campaign in February 2007, Obama emphasized withdrawing American troops from Iraq, energy independence, decreasing the influence of lobbyists, and promoting universal health care as top national priorities.
Palin holds Bachelor of Science degree in journalism from the University of Idaho, served two terms on the Wasilla, Alaska, City Council from 1992 to 1996, and was elected mayor of Wasilla twice, in 1996 and 1999. She also ran unsuccessfully for lieutenant governor of Alaska in 2002, was elected governor in late 2006.
She may be qualified when compared to Bush, but not when compared to Obama or Biden.