Your quote isn't in your link, but from Googling it:
http://en.wikipedia.org/wiki/Electio...United_States)
Election Day is a civic holiday in some states, including Delaware, Hawaii, Kentucky, Montana, New Jersey, New York, Ohio, and West Virginia. Some other states require that workers be permitted to take time off from employment without loss of pay. California Elections Code Section 14000 provides that employees otherwise unable to vote must be allowed two hours off with pay, at the beginning or end of a shift.
So in other words: Not a national holiday.