The only known voter fraud is being committed by republicans.
Republicans have ended the voter drives in Nevada, Florida, Colorado, Virginia and North Carolina. Why would they do such a thing? Because the firm they hired, Strategic Allied Consulting, the only company the Republican Party had running registration campaigns in these states, has been rocked by scandal after scandal. This election year, voter suppression law after voter suppression law rolled out, many of which have been struck down as unconstitutional by the courts, all to catch fraud; so far the only fraud that has been proven has been on their side.
Strategic Allied Consulting was accused of fraud during the 2008 campaign. They allegedly paid bonuses for non-Democratic registrations and destroyed hundreds if not thousands of Democratic registrations in Oregon. This leads voters who believed they registered to go to the polls only to find that their registration wasn't completed.
Strategic Allied Consulting was known to be dirty to the Republican National Convention, rocked by scandals long before the RNC recommended them to consult for various state Republican Parties. The firm is headed by the former executive director of the Arizona Republican Party and was the sole company hired for the "Get Out The Vote" effort in many important swing states, leaving the Republican voter drive in dire straights.
When the GOP is implicated in funding fraudulent registrations and has voter fraud committed on it's behalf, it undermines the already transparently-fraudulent witch hunt that it's been on for the past year to find the voter fraud to justify it's voter suppression policies.