Yah.. I realized that after I posted... sorry bout that
I found this at the latimes (you might have to register).
http://capwiz.com/latimes/e4/
Every state is different, but you vote for a number of things:
President/Vice President
There may be congressional Races as well.
Also, you vote on state issues.
ie: in New Mexico Constitutional Amendment:
Consitutional Amendment 3
PROPOSING AN AMENDMENT TO ARTICLE 7 OF THE CONSTITUTION OF NEW MEXICO TO ALLOW RUNOFF ELECTIONS FOR MUNICIPALITIES HAVING A POPULATION OVER TWENTY THOUSAND AND FOR CERTAIN OTHER ELECTIONS AS PROVIDED BY LAW
As far as why every state is different in how people vote?
I am guessing that is state run legislation on weither they vote with computer or punch cards.
Thats the limit to my knowledge, so hopefully someone like Lanny or Dis will explain it a little better.