In the second round Duda took 51.55% of the vote against the 48.45% share of his rival, then-incumbent president Bronisław Komorowski. On 26 May 2015, he officially resigned from party membership.
The five-year term of Andrzej Duda began on 6 August 2015 with taking an oath of office during a National Assembly session.
In September 2015 Prime Minister Ewa Kopacz declared that Poland, as an expression of “European solidarity”, would take in 2,000 people over the next two years, mainly from Syria and Eritrea (out of 3,700 originally requested).
In November 2015, basing on Art. 139 of the Constitution of Poland, Duda pardoned former Central Anticorruption Bureau (CBA) head Mariusz Kamiński and three CBA officers convicted by a court of 1st instance in the so-called "Land Affair", marking the first pardon granted by a president before reaching a final verdict. According to some lawyers (including professors Jan Zimmermann – Andrzej Duda's doctorate promoter, Leszek Kubicki – former Minister of Justice and Andrzej Zoll – former president of the Constitutional Tribunal) Duda breached the Constitution of Poland.
On 28 December 2015, Duda signed the Constitutional Tribunal bill (passed on 22 December 2015 by the Sejm), which unequivocally breaches the Constitution of Poland according to the National Council of the Judiciary of Poland, the Public Prosecutor General and the Polish Ombudsman.