Democrat Barack Obama tweeted this video response.
Twitter Nation reported a rash of finger injuries last night, as the citizenry tweeted along with every line of President Bush's final State of the Union address.
As of 8:30 or so this morning, the Twitter response from the presidential candidates looked like this:
@barackobama: In Washington, DC at the State of the Union. To watch my response visit http://youtube.com/barackobama
@ronpaul2008: Busy day in Maine today!
@hillaryclinton: I am visiting CT and MA to talk about solutions for the American economy before going to DC for the State of the Union address tonight.
@johnedwards: Last posted two months ago
Bonus: The Bryant Park Twitter feeds