@Merry Andrew,
Predictable stuff from Krugman: deceptive too.
While it is true that some Republicans have used the argument that various of the Democrat proposals would significantly reduce Medicare benefits, that is certainly not and has never been the central theme of Republican opposition to the various versions of Obamacare - though Krugman bases his whole argument on that proposition - namely that Republicans are opposing a "public good" (government managed health care) using a central argument that is fundamentally contrary to their underlying beliefs.
The key Republican arguments have instead centered on the folly of adding to already out of control entitlements in the midst of a major recession and thereby adding to the already wasteful (and only marginally effective) stimulus program which will burden our economy with debt for years. Other central arguments have addressed the side effects of government management; ranging from the inevitable squeezing out of private options if a government subsidized & managed plan in put into the program (government unilaterally sets its payment rates and uses its market power to simply transfer provider costs to private consumers), to the inevitable side effects of government management - brueaucratic rationing of care and disincentives for investment, innovation and quality patient care.
Frankly it was President Obama's disingenuous (and I suspect thoughtless) assurances that he could cut $500 Billion over 10 or so years from Medicare without ANY degredation to benefits that ignited this issue. Obama's bland and deceitful assurances on this fatuous point demanded a rebuttal - and he got it.
This, of course was in addition to the president's other rhetorical deceptions. Throughtout the campaign he continuously offered voters vague assurances about what his "Plan" would and wouldn't do - including his opposition to a "public option". He continued this rhetoric after he took office, while he delegated the "Plan" to the Congress which produced several versions, none of which lived up to the still repeated assurances of "his (nonexistant) Plan". Yet the rhetorical assurances continue.....
Krugman is simply using his usual devices - misrepresenting the opposition with an obviously flawed and deceptive argument and then knocking down his own creation and announcing .... victory. The lead in about the supposed cheering after ther IOC announcement was cute though. (I suspect the true believing imbibers of the wonderfulness-of-Obama Kool Aid just couldn't deal with the observation that the magic didn't work... and isn't working so well in other areas either.)