"Class warfare does not work in this country. We've seen it tried time and time again. And when it does work, it doesn't sustain itself," said John Weaver, a top strategist for Sen. John McCain's 2008 presidential campaign.
Being more combative against Wall Street also could backfire on the fundraising front, drying up crucial cash sources.
"New York banks are the ATM of American politics. It's just that simple," said Hank Sheinkopf, a Democratic strategist in New York. "You alienate them, you don't get the kind of campaign contributions you think you should."
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