I ran around to 3 different stores Friday night to find stamps to mail my re-registration form to change my address.

it would have had to been done by October of last year in order to vote in this year's primary.

"An obscure bit of election law (Section 5-304) requires voters to change their party enrollment prior to the registration deadline for the general election in November the year before the primary, giving New York the earliest change-of-party deadline of the 11 U.S. states with a closed primary system. New York is also the only state among those 11 where the deadline doesn't fall within the same calendar year as the primary."

http://gothamist.com/2015/10/06/democracy_bureacracy.php

This doesn't apply to new voters who will have till Friday to register.

More states should do this.