Between 2000 and 2001, he started working for
Jacek Saryusz-Wolski at Poland's Office of the European Integration Committee. In the years 2004–2009, he was an advisor of the
Civic Platform political party at the
European Parliament. In 2009, having received 25,178 votes, he was elected
Member of the European Parliament representing the Platforma Obywatelska party. During his election campaign he was supported by well-known Polish personalities and artists such as
Tomasz Karolak,
Grzegorz Turnau,
Michał Żebrowski and
Urszula Dudziak. At the European Parliament, he was a member of the
European People's Party. In 2010, he was the head of the election campaign of
Hanna Gronkiewicz-Waltz running for the post of the mayor of
Warsaw in the
2010 Polish local elections. and
Grzegorz Schetyna in Brussels, June 2017 On 27 November 2013, Trzaskowski was sworn in as the
Minister of Administration and Digitization by
President Bronisław Komorowski. During his ministry, Trzaskowski created a system of notifying the Government Security Center warning citizens, about violent meteorological phenomena. He was responsible for cooperation with local governments, supervision over voivodes and assistance to victims in connection with natural disasters, for example during the
floods in 2014, as well as cybersecurity, accessibility of content on the Internet for people with disabilities and protection of personal data on the web. On 24 September 2014, he became Deputy Minister of Foreign Affairs of the Republic of Poland and dealt with co-ordinating matters relating to the EU across the different ministries of the
Donald Tusk cabinet. At that time, Trzaskowski was the main negotiator in relations with the EU on behalf of the prime minister and coordinated the work of ministries in relations with EU institutions. In 2015, he participated in the
2015 Polish parliamentary elections and won a seat in the
Sejm having received 47,080 votes. In 2016, he became a National Council Member of the Civic Platform party. In the same year, he assumed the post of Minister of Foreign Affairs in the
shadow cabinet created by the Civic Platform. On 29 March 2017, he became the vice-chairman of the European People's Party. As a Member of the Sejm, Trzaskowski was a member of the European Union Affairs Committee, Foreign Affairs Committee and the Digitization, Innovation and Modern Technologies Committee. In parliamentary activities, Trzaskowski mainly dealt with issues related to foreign affairs, European policy, defence, as well as health policy, protection of civil and minority rights, and self-government support. During his time, he submitted over 150 interpellations and over 70 parliamentary questions. In 2017, he received the order of the
Legion of Honour for his contributions to strengthening the Polish-French relations. In February 2020, he was elected as
Civic Platform's vice-chairman.
Mayor of Warsaw (2018–present) Congress in
Malta, 2017 during conversation with Trzaskowski and former Prime Minister
Mateusz Morawiecki. In November 2017, it was announced that he would be the joint candidate for the
Mayor of Warsaw of the Civic Platform and the
Modern political party in the
2018 Polish local elections. During his mayoral term, Trzaskowski introduced, among others, a free nursery program for Warsaw kids, increased funding under the Warsaw in vitro program and carried out record purchases of clean public transport vehicles. In the first years of his term in office, six new stations of the second metro line were commissioned and works on the construction of the third metro line were started. Along with the mayors of the capitals of the other
Visegrád Group countries, Trzaskowski signed the
Pact of Free Cities in December 2019 to promote "common values of freedom, human dignity, democracy, equality, rule of law, social justice, tolerance and cultural diversity". In August 2020, the mayors released a joint statement, which expressed solidarity with the
protesters in Belarus and condemned the violence used by the state authorities. It also appealed to the
European Union "to review its policy towards
Belarus and introduce measures against those responsible for the violent crackdown". In November 2023, Trzaskowski banned a
pro-Palestinian protest against the
Gaza war held in Warsaw, citing security concerns and
antisemitism. A supporter of laicism, he signed a law that forbade religious symbols from Warsaw city hall in May 2024.
LGBT rights On 18 February 2019, Trzaskowski signed a 12-point
LGBT Declaration aimed at combating discrimination of the LGBT community and providing guidance in the area of personal security, education, culture, sport, administration, and employment. His action and the declaration itself met with criticism from the national conservative
Law and Justice (PiS) party.
2020 presidential campaign . On 15 May 2020, he was chosen by the Civic Platform party leader Borys Budka to be their candidate for
Presidency of Poland to stand in the
presidential election, after
Małgorzata Kidawa-Błońska's resignation from her candidacy. In the second round of voting, Trzaskowski won 48.97% of the votes, losing the election to the incumbent
Andrzej Duda, who won 51.03% of the votes.
Wspólna Polska movement On 17 October 2020, Trzaskowski inaugurated what he termed as "a social and civic movement" named "Wspólna Polska". A part of it, called "New Solidarity", was to be a trade union for the self-employed and those working on term contracts. Around 11,000 members registered within days of the announcement. As of May 2023, the movement's website has not been updated since May 2021, and as of July 2023, it has been taken down altogether. The movement's Twitter account has not been active since December 2021.
2025 presidential campaign On 22 November 2024, he was chosen in a primary by the Civic Platform party to be their candidate for
Presidency of Poland to stand in the
2025 Polish presidential election, defeating foreign minister
Radosław Sikorski after winning 75% of the vote. He finished first in the first round held on 18 May 2025 with 31.36% of the vote, and faced PiS candidate
Karol Nawrocki in a runoff on 1 June 2025, where he lost, with Nawrocki winning 50.89% of the vote. ==Political positions==