Why Election Day won't be postponed

With Superstorm Sandy leaving communities under water, stranding millions without power and consuming public resources in several states, could next Tuesday's vote for president be moved to a later date?
Sandy leaves election officials scrambling
No, it can't. Without passage of a new federal law, voting for president is required to take place on Tuesday, November 6, as planned.
But, partial postponements of voting in some affected areas are possible, consistent with the laws governing the election of the president and vice president.
Here's why: