WASHINGTON (Reuters) - In Florida, Virginia and Indiana, voters have received phone calls that wrongly told them there was no need to cast a ballot in person on Election Day because they could vote by phone.
In Ohio and Wisconsin, billboards in mostly low-income and minority neighborhoods showed prisoners behind bars and warned of criminal penalties for voter fraud - an effort that voting rights groups say was designed to intimidate minority voters.
And across the nation,
some employers - notably David and Charles Koch, the billionaire
brothers who help fund the conservative group Americans for Prosperity -
are urging their workers to vote for Republican Mitt Romney for
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