It's an interesting read. It makes perfect sense that the majority of Americans are going to be middle of the road people because that's where the greatest concentration of common sense can be found.
On the other hand, some of the views described in the article as progressive I would think of as being more liberal. Big government, big spending, lots of government assistance, grass root economics, etc are traditionally lib values unless I am mistaken.
I would have voted with the majority on some of those questions, but mostly I favor a weaker central government (certainly weaker than the *cough* conservative government we have in place).
As for equality issues, I'm all for it as long as it's not done at the expense of others getting a fair shake. That's almost impossible to do with legislation. On that issue, I would say that since the majority of Americans already favor the idea of a just and equal society, there's no need for central involvement because the problem will solve itself.
I'd be willing to pay for progress on energy and for alternative fuel research, but only to a point. I'd expect results within a reasonable but very specific timeline. No results = no more funding.
I think nationalized health care would be as big a flop as Social Security because the same .gov wonderboys would be dreaming up and executing the plan. It *could* work, but only if people receiving benefits are the same people who contributed X amount into the pool. Oh, and participation shouldn't be mandatory.

Gun control legislation in the United States would be doomed to failure much like the war on drugs and for the same reasons. No explanation should be necessary here.
Strong alliances can be useful, but they come with strong obligations. I would be in favor of an alliance where all members contributed the same amount of money and human resources into any common goal. When you have a few members contribution 10 or 100 times as much as some other members for any given project, it's not a very worthwhile alliance except on the stage of world perception.
Maybe it's just where I've lived and whom I've known, but the majority of the people I know don't really delve quite so far into the left as the study suggests. Most of them are pretty much down the middle.
Ok, I think that about covers everything. Thanks for the read and pardon the wall of text.