(CNN) For the third straight year, elite hackers from around the world who spent a long weekend hacking into voting equipment have released a report detailing vulnerabilities in machines still in use across the country.

Each of the more than 100 machines the researchers looked at were vulnerable to at least some kind of attack, said Georgetown professor Matt Blaze, one of the Def Con Voting Village's organizers.

The report will be of particular concern to lawmakers going into next year's Presidential election.

"I'm going to get this in the hands in every member of the US Senate," said Oregon senator Ron Wyden, the most outspoken election security advocate in the Senate, as he introduced the Def Con Voting Village report.

As in previous years, the Voting Village collected versions of voting equipment used around the country, much of it ordered from eBay, and invited all of the more than 35,000 attendees of the Def Con hacker conference, which took place in Las Vegas in August, to see what kind of holes they could find.

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