A prominent liberal commentator approached me today and said, "I'm sorry I voted for Obama." This person was livid about Obama's vote for the FISA bill. ("Telecom immunity is a biggie for me," s/he said.) And this commentator, after complaining Obama's plans for the economy and energy independence were not extensive enough, shared his/her big fear with me: "He's an empty suit."

That's not my take. But there's obviously a liberal backlash against Obama, especially among a small cadre of bloggers who were enraged by his vote for the FISA legislation. Liberal voices, such as Arianna Huffington, have slapped or blasted Obama for supposedly moving to the center. My hunch is that these criticisms do not reach the swing, independent, moderate, whatever-you-call-'em voters who don't yet know for whom they're going to vote. (Obama versus McCain--you have to be pretty distant from the political process to have to wrestle over that choice.)

But I suppose one question is whether the left-of-center complaints about Obama provide any drag on his campaign. In 1992, similar criticism of Bill Clinton did nothing to slow down Clinton, who angered (or irked) many liberals with his triangulations and connections to the Democratic Leadership Council, a corporate-backed group that spent much of its time bashing the base of the party. But the more contemporary evidence is Obama's continued success at fundraising. On Friday, his campaign announced that he had raised $52 million in June. That's $30 million more than McCain raked in--and only $3 million less than what Obama raised in his best month (February).

Bottom-line, he's still going strong. At least in June, that is. All this fundraising was before his FISA vote and before the media misreported that he was backtracking on his vow to disengage in Iraq. But the numbers indicate that throughout June, after he became the presumptive nominee, he still was drawing new supporters (Hillary Clinton backers?) and continuing to build an enormous base of donors he can tap for the general election. The July fundraising figures, though, will be interesting--revealing whether the recent outburst of liberal dissatisfaction has spread beyond the blogs (and whether McCain's recent blunders have even further dampened enthusiasm for his campaign).

It's not hard to imagine the calculation going on at Obama HQ: we'll take the grumbling, as long as Obama can still work his magic with voters (especially those in-the-middle uncommitteds) and donors. But at some point, might there be a real cost? Watch the July ticker.