Ross Douthat claims...

...that the Romney campaign made three mistakes in its run for the White House. (Only three?) 

From "Mistakes Were Made," in the Times today: 

(1) They didn’t know how to talk about Romney’s wealth. 
(2) They played a prevent defense in South Carolina.
(3) They let up after Florida and let Rick Santorum back into the race. 

I'd go Douthat one better; I think Romney has made only one mistake (but it's been a big one): 

He failed to articulate a positive message. 

We all know what Mitt Romney is against -- President Obama, Newt Gingrich and now Rick Santorum. But what, if anything, is he for? Whenever I see the former governor of Massachusetts criticize the president on television, I just want to say, "But what would you do? What would you have done differently?" 

Repeal Obamacare? I don't believe you. 

Even the economic "plan" Romney delivered in Ford Field has been derided by fellow Republicans as adding to the deficit. (He's obviously not serious about it.) 

So what do you believe in, Mitt? What -- if anything -- do you stand for? (Besides singing patriotic songs.)