The article makes a lot of good points, thinks this "lefty-boy." As Will Rogers once said: "I don't belong to any organized political party. I'm a Democrat."
This is the sort of thing that tends to happen to parties when they are out of power. Having someone in the White House to provide the party some direction helps immensely. During the 1990s, the Republicans complained bitterly about how Clinton "stole" their ideas and turned them into his legislative successes.
I have grave doubts about this Medicare bill, though. It's a disaster and everyone--including the Republicans--knows it. That's why they delayed its impact until 2006. The point of the Medicare bill was to be able to say Mr Bush did something on this issue, while actually doing nothing, and then maybe it can be fixed after he wins re-election. That was the Republican strategy anyway. And in the meantime, shovel a few more tens of billions of dollars at the big HMOs, who are so critical to the Republican fundraising machine.