On Thu, May 12, 2011 at 9:58 AM, Doug Hess <douglasrhess@gmail.com> wrote:
A friend in the Senate passed along to me the link below showing
interactions between the HAVA 4-digit verification requirments, state
officials, and the Social Security Administration. I'm not sure if
people have seen it before or how long it has been up, but the data
shows a lot of state-by-state variation.
http://www.ssa.gov/open/havv/
This is pretty fascinating... the ratio of matches/non-matches is
pretty well-behaved, except for a few states, most notably California,
which has a 10% match ratio! I wonder why this is... it could be that
some canonicalization that the CA DMV does to the data results in
fewer matches. best, Joe