JUST IN: From Sanders campaign: access to voter files will be restored Saturday morning.

[frazzled]

41. The Sanders campaign exploited a breach to gain access to valuable information

The Clinton campaign has also invested millions in survey research; it does not seem the Sanders campaign has done so. Survey data is the fuel for strong modeled estimates: Without it, you’re less likely to know the voter characteristics that tend to predict who will support a given candidate.

If the Sanders campaign was able to save the information necessary to know whom the Clinton team considered its strongest supporters, it would have been quite helpful: His campaign could then stay away from the voters who have supported Mrs. Clinton, and it would give the campaign an even better idea of its supporters.

This is what Sanders campaign officials attempted to do, and, according to Bloomberg News, they succeeded. Bloomberg reported that Sanders officials searched for and saved lists of voters who were modeled by the Clinton campaign to be among its likeliest supporters. For instance, they searched and saved a list titled “HFA Support 50-100,” which would include anyone deemed by the Clinton campaign to have a greater than 50 percent chance of supporting Mrs. Clinton. These support scores are informed by the powerful and proprietary data — on Clinton volunteers, past supporters, the Clinton campaign’s polling — that the Sanders campaign would not otherwise be able to gain access to.

http://www.nytimes.com/2015/12/19/upshot/sanders-vs-party-why-voter-data-can-be-so-important.html?hp&action=click&pgtype=Homepage&clickSource=story-heading&module=first-column-region&region=top-news&WT.nav=top-news

This is not in dispute: digital footprints were left of the searches. Whether they were exported and saved is unclear. But you don't need to export the files. Just whip out your phone camera and take pictures of the screens. And you can capture a hell of a lot of screens in 40 minutes.