Confirming Rasmussen and Fox News:
Mitt Romney is supported by 47% of national registered voters and Barack Obama by 45% in the inaugural Gallup Daily tracking results from April 11-15. Both Obama and Romney are supported by 90% of their respective partisans.
Gallup’s previous general election trial heat, from a national poll conducted March 25-26, showed Obama with a slight 49% to 45% lead over Romney.
And what’s changed in the last three weeks? The Trayvon Martin case, of course!
Also note that Romney voters are more eager to vote than Obama voters: