I think more cheers than boos as McCain enters. In the beginning of his remarks, McCain praises Romney and Huckabee.

This line got some applause inside the ballroom:

I am proud, very proud, to have come to public office as a foot soldier in the Reagan Revolution. And if a few of my positions have raised your concern that I have forgotten my political heritage, I want to assure you that I have not, and I am as proud of that association today as I was then.

Here on blogger’s row – where one of the televisions blinked off just as McCain was about to take the stage – there was something akin to rapt silence as McCain began. Now we’re hearing murmurs, a bitter little laugh when McCain describes his record as “mainstream conservatism.”

McCain gets applause for mentioning that he campaigned in Iowa against agriculture subsidies, and in Florida against a National Catastrophe Fund, and against adding the prescription drug benefit to Medicare, a new entitlement that isn’t paid for (this one gets some “whoo!”s).

The key parts on illegal immigration:

And while I and other Republican supporters of the bill were genuine in our intention to restore control of our borders, we failed, for various and understandable reasons, to convince Americans that we were. I accept that, and have pledged that it would be among my highest priorities to secure our borders first, and only after we achieved widespread consensus that our borders are secure, would we address other aspects of the problem in a way that defends the rule of law and does not encourage another wave of illegal immigration.
All I ask of any American, conservative, moderate, independent, or enlightened Democrat, is to judge my record as a whole, and accept that I am not in the habit of making promises to my country that I do not intend to keep.

Those lines got some applause. It seems that the speech, so far, is getting a warm reception.