Why it's pointless to pay attention to polls in April

From Gallup:

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.

From CNN:

President Barack Obama holds a nine-point lead over Republican challenger Mitt Romney thanks in part to the perception that the president is more likeable and more in touch with the problems facing women and middle class Americans, according to a new national poll.