When a Democratic President continues to shove Social Security, Medicare, and Medicaid back onto the negotiating table after being offered a clean debt ceiling deal by the Senate GOP, CNN polling shows liberals are taken aback:

“… 13 percent say they disapprove of Obama because he has not been liberal enough – nearly double what it was in May, when the question was last asked, and the first time that number has hit double digits in Obama’s presidency.”

Looking at that figure another way, roughly one in four Americans who disapprove of the president say they feel that way because he’s not been liberal enough.

Obama’s approval and renominate numbers are at their lowest point ever, as well:

Obama’s approval rating among liberals has dropped to 71 percent, the lowest point in his presidency. And the number of Democrats who want the party to renominate Obama next year, now at 77 percent, is relatively robust by historical standards but is also down a bit since June.

CNN polling director Keating Holland provides the “why:”

“It’s likely that this is a reaction to some of Obama’s recent actions, including his willingness to discuss major changes in Social Security and Medicare as part of the debt ceiling negotiations,” adds Holland.

Worth noting: this poll closed two days ago, before public notice from Senators Mikulski, Feinstein, and Cantwell that they weren’t on the same page as the president. Long-tenured, mainstream Democratic Senators’ complaints about the White House don’t reverse this polling trend: they amplify it.