They found that people who got Facebook messages that their friends had voted were a bit more likely to go to the polls than those who did not get the same reminder. And from there the effect multiplied in the social network, they reported in Thursday's journal Nature.The friend-prodding likely increased voter turnout by as much as 340,000 in the non-presidential election that voted in a new Republican congress, the scientists calculated. They said that it could potentially change the outcome of close elections.
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