Which McCain will we see?
YOu would then need to measure McCain's 90% vote with Bush as an indicator of where he stands on issues.
Obama is the most liberal senator.
“It's not change when John McCain decided to stand with George Bush 95 percent of the time, as he did in the Senate last year,” Obama said.
The number Obama cited didn’t come out of thin air. It reflects McCain’s 2007 “presidential support” score from Congressional Quarterly, part of a carefully measured and widely cited series of vote studies that demonstrate how often lawmakers back or oppose the president, as well as the majority of their parties.
As the chart below shows, John McCain has indeed voted consistent with the preferences of President Bush about 90% of the time on these presidential support roll-calls. This has been roughly the same level of support as the average Republican senator.
McCain's presidential support level was 95% in 2007, but this is somewhat misleading. Because he was running for president, McCain was present for only 38 of the 97 roll calls CQ used to calculate the presidential support score. There were 442 roll-call votes in total in the Senate in 2007. Looking at only those votes for which both McCain and Obama were present that year--33 votes--McCain's support score was 94% while Obama's was 48%. CQ also noted in a recent post that McCain, Obama, and Biden voted on less than half the presidential support votes from January through August 2008.