A majority of US registered voters consider Edward Snowden a whistle-blower, not a traitor, and a plurality says government anti-terrorism efforts have gone too far in restricting civil liberties, a poll released on Wednesday shows. Fifty-five percent said Snowden was a whistle-blower in leaking details about top-secret US programmes that collect telephone and internet data, in the survey from Hamden, Connecticut-based Quinnipiac University. Thirty-four per cent said he's a traitor.