Gergen: The political ground shifting underfoot

[cnn-photo-caption image= http://i.l.cnn.net/cnn/2008/images/01/16/art.gergen.cnn.jpg caption= "CNN Senior Political Analyst David Gergen."](CNN) - From about 30,000 feet, here's what the political landscape looks like to me today, just after Michigan and the Democratic debate in Nevada:

- The terrain for the general election is moving even more strongly in the Democrats' favor. With results in from four states, Republicans have at least four - arguably five - candidates bunched together at the top - each one of whom can win the nomination but no one of whom inspires all the party faithful. That's not a promising scenario for a party whose strength on election day has depended heavily upon an army of excited volunteers. Meanwhile, Democrats are choosing between two candidates, each of whom can win and can also rally the party in November.

Read Gergen's complete analysis over at the AC 360 Blog!