An aide to Bernie Sanders' presidential campaign was accused of improperly accessing confidential voter data gathered by Hillary Clinton's campaign, according to multiple reports. The aide was fired.

The Democratic National Committee responded by suspending the Sanders campaign's access to the party's voter data file, which contains data from all 50 states, according to BuzzFeed.

This incident occured at the end of a good day for Sanders, in which he beat out Clinton for endorsements from Democracy for America and the Communications Workers of America. It also comes just days before the last Democratic presidential debate of the calendar year and six weeks before primary voting begins.

The episode raises several questions. First, what is the DNC "glitch" that allowed this to happen and how secure is the party's confidential voter information? An audit is likely coming.

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