Despite a number of controversies, the democratic security policy has ensured that former President Uribe remained popular among Colombian people, with his approval rating peaking at 76%, according to a poll in 2009. However, having served two terms, he was constitutionally barred from seeking re-election in 2010. In the run-off elections on 20 June 2010 the former Minister of defense Juan Manuel Santos won with 69% of the vote against the second most popular candidate, Antanas Mockus. A second round was required since no candidate received over the 50% winning threshold of votes. Santos won nearly 51% of the vote in second-round elections on 15 June 2014, beating right-wing rival Óscar Iván Zuluaga, who won 45%. Iván Duque won in the second round with 54% of the vote, against 42% for his left-wing rival, Gustavo Petro. His term as Colombia's president runs for four years beginning 7 August 2018.