Here’s a pdf link that shows participation in several different years plus some other info.
http://www.empowerthevotetx.org/uploads/KANSAS.pdf
thanks!
Did a simple check on the page:
In 2012, 15 states participated.
None of these states other than Illinois, were in the top 10 states for population.
There were about 45million voters checked.
Of those, they found slightly mope than 1.36 million duplications.
If these figures remain constant throughout the entire country, that means that there are between ten and eleven million people who are registered to vote in the USA in two or more states.
All of these should be removed from the voter rolls of BOTH states, and disqualified from voting in federal elections.
Absolutely no excuses!