There are groups forming to protect the vote in the event that pressure is exerted to announce the election result before all the votes are counted.
ProtecttheResults.com is one that is organizing events locally. Friends who are led to participate can more information about this on their site. It includes a searchable map to locate events and a link for further information.
That map is also at the website of ChooseDemocracy.us. There, you can also find a training in non-violence methods of deescalating conflict.