"For instance, a casual reader of your reposted "accomplishments" post might get the impresison that Obama reaches across the aisle. But he doesn't. He's one of the most partisan members of the senate when it comes time to vote." Agreed, he has pretty much been a partisan politician (90 plus percent) although the Federal Funding Accounting and Transparency Act of 2006 was sponsored by Coburn, Obama, Carper and McCain, two Democrats and two Republicans.
Regarding the financial crise, John McCain has been, both by voting record and public statement, much more of a deregulator than any Democrat.
I use the Vote Smart website to see how the politicians have actually voted: http://www.votesmart.org/
But that shouldn't even be a debated point. McCain backed and enthusiasticly supported the Commodity Futures Modernization Act and the Gramm-Leach-Bliley Act, the two primary peices of legistlation that deregulated the industry. "Gramm" of course refers to John McCain's long-time friend and associate, Phil Gramm, who was John McCain's campaign advisor until he referred to America as a "nation of whiners" in the context of the financial crisis.