It's worth keeping in mind that his "extremely liberal" votes included:

• voting to withdraw troops from Iraq (Clinton and Obama voted identically)
• immigration reform that included a path to citizenship for illegal immigrants (Clinton and Obama voted identically)
• supporting the party's positions on health care, the economy, energy, education and the budget (Clinton and Obama voted the same way as far as I can tell).

If you believe that Clinton is less vulnerable to republican attacks about her liberal record, I think you are wrong. As much as Hillary has recently morphed into a gun-toting, beer-swilling white male from a blue collar family, we need to remember that our two candidates are essentially identical on the issues.