The Democratic National Committee said it has indefinitely cut off Sanders’ access to the Democratic Party’s master voter file, after a computer glitch made some confidential data from Clinton’s campaign briefly accessible to the Sanders campaign. The Sanders campaign says it has fired a staffer who breached Clinton’s data. Being locked out of the file means the Sanders campaign will not be able access the party’s master list of likely Democratic voters, effectively grounding the campaign’s voter outreach to a halt.