The Voter Participation Center, the voter registration group which was the subject of a complaint from the Romney campaign, says it is no longer sending out pre-populated voter registration forms to Virginia residents.

VPC founder and president Page Gardner told reporters about the change in a conference call on Wednesday afternoon responding to media stories about some of the group's forms being sent to pets, kids and the deceased. In response to a question from TPM, Gardner explained how cats and dogs might have ended up on the mailing lists used by the group.

"If someone signs up their pet to get a magazine subscription, their pet to get whatever they want their pet to get, yes, they can get on a database that is then used to do a mailing," Gardner said. "We now have a list of hundreds and hundreds of common pet names we exclude from our mailing lists."

Late update: A VPC official clarifies that the organization had already stopped sending out pre-populated forms before Romney's complaint after discussions with Virginia officials.