U.S. authorities prepare for possible attempts to disrupt voting in midterm elections

American voters and election security officials are preparing for possible disruption, interference and even violence on Election Day Tuesday as millions of Americans head to the polls.

According to a recent joint poll by the Economist magazine and the polling service YouGov, just over half (51%) of Americans think violence at the polls is likely or very likely.

In addition, a poll of 1,500 people between October 29 and November 1 found that an equal number (51%) believe that foreign governments will try to interfere in the election.

A separate YouGov poll in July found that 32 percent of those polled would have little or no confidence in the results of the midterm elections.