CSPAN just had on Ron Paul taking calls from citizens and one of the questions asked was why he wont support mccain to show republican 'unity'.
He said he believes in unity, that we should unite, but not for something/someone we don't believe in. We should unite together for the Constitution and to restore America, not for someone that hasn't voted along the Constitution or for traditional republican values.
Now back to your question....
No, but Campaign for Liberty (Ron Paul Convention) will be on CSPAN2 today at 130pm eastern.
As for palin speaking today, CSPAN said the gop havent released a schedule for the next couple days, but she was expected to speak tomorrow (the night before mccain is to speak).