Between Occupy Wallstreet antics, the constant attacks on the Tea Party, media bias, Obama's constant campaign of snark and ridicule, Obama and Warren's you didn't build that campaign, PPACA, all the many regulations flowing from EPA and Dodd-Frank, Solyndra, Fast and Furious, White House leaks regarding national security issues, it's just become too much. The Left has misjudged the size of the opposition force. Most on the Left actually believe that anyone who doesn't accept the principles of social democracy in 2012 is out of touch, irrelevant and a member of a shrinking faction of ignorant racists or rich bastards trying to control the nation through the market.
Now that Rahm Emanuel and several others in government have poked the hornet nest one more time by calling out the Chick fil A owner for stating he supports same sex marriage, just as Obama has stated in the past, the Left has gone way too far. I've written for a while now I think there are many Americans who've been quiet who will now stand up and fight back. The Left has tried its best to establish a powerful State that enforces their values on the rest of the nation. Some of these values are fine in and of themselves, but acceptance of values must be voluntary. As long as an individual is not violating the rights of another, then we still value free speech. We don't all have to believe the same things. And anyone who promotes same sex marriage is not a bigot or homophobe. As I said, just a few months back, Obama stated he supports same sex marriage as the definition of marriage. The Left has gone too far in its attacks on the Right, making universal claims that just aren't true of most on the Right.
A large part of American society is not political so they don't really think of themselves as on the Right, but many of them are sceptical about government, although they have no problems with government providing roads and bridges and such. Most of these people haven't thought deeply about government interventions, but they are learning every day as they begin to investigate what others are discussing. The Information Age has changed the game.
If the Left is not careful, their 20% will be overwhelmed by Americans tired of being smeared and talked down to on a daily basis.