Election Day is TODAY: Tuesday, November 6, 2012.
Voting is a guaranteed right of every United States citizen over the age of 18 and one of the most important civic duties in a democracy.
From the ACLU:
If you feel intimidated or threatened by ANYONE at your polling station, please call: 866-OUR-VOTE (866-687-8683). This number is a permanent hotline run by the Lawyers Committee on Civil Rights and Economic Justice. On election day it will be staffed by volunteer lawyers from LCCR and the ACLU of Massachusetts, from the time polls open until they close.
For more info: http://www.aclum.org/vote