McCain voted with Bush over 90% of the time while in the Senate including 100% in 2008

http://mccainsource.com/mccain_fact_check?id=0012

Presidential Support
Year Support/Oppose
2008 100% 0% (through May 15, 2008)
2007 95% 5%
2006 89% 11%
2005 77% 23%
2004 92% 8%
2003 91% 9%
2002 90% 10%
2001 91% 9%

http://blog.washingtonpost.com/capitol-briefing/2007/04/mccain_most_absentee_08_senato.html
McCain: Most absentee '08 Senator