One third of people registered by ACORN were rejected by election officials?

http://johnrlott.blogspot.com/2009/09/one-third-of-people-registered-by-acorn.html

In an article generally defending ACORN against the recent five films
released on biggovernment.com, there was this interesting fact
(http://www.rasmussenreports.com/public_content/political_commentary/commentary_by_debra_j_saunders/inside_the_glorious_nation_of_acorn).

Last year, ACORN was forced to acknowledge that election officials
rejected 400,000 of the 1.3 million people the group had tried to
register. . . .

The article does have some other interesting facts about problems with
the ACORN sting.