Coroporate lobbyist Mark Penn thinks so...
http://www.huffingtonpost.com/mark-penn/democrats-need-to-back-ob_b_795143.html
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Second, the Democrats have got to stop returning to class warfare. The Democrats -- and Obama in particular -- were on their way to becoming the party of the upwardly mobile professionals making over $100,000 in income, especially young professionals. This was one of the party's fastest growing constituencies. This was evident in the 2008 election returns as Obama got 49 percent (tying McCain here) of the voters earning over $100,000 and a majority 52% of the voters in households earning over $200,000. And this has become no small group -- $100k households were 26 percent of the 2008 electorate -- up from just 9 percent in 1996. But by failing to make this tax deal before the election, Obama lost a lot of ground with those new Democratic voters, who voted Republican by an 18-point margin in 2010. These voters will favor the social policies of the Democrats and many progressive Democratic domestic policies as long as they don't think they are being taken to the cleaners when it comes to tax policy.
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