Switzerland: Roberto Schmidt becomes president of the Council of State of Valais.
United Kingdom: Defence Secretary Gavin Williamson is dismissed. Penny Mordaunt is named to succeed him (taking office May 3).
Australia: Margaret Beazley is sworn in as governor of New South Wales.
Comoros: Former foreign minister (1975, 1978-82) and prime minister (1982-84) Ali Mroudjae dies.
Congo (Kinshasa): President Félix Tshisekedi appoints 18 of the 23 governors elected in April, and 4 more on May 18. They take office at various dates throughout the month.
Guyana: Karen Cummings is sworn in as foreign minister.
Puerto Rico: Former governor (1973-77, 1985-93) Rafael Hernández Colón dies.
United States: The mayor of Baltimore, Catherine Pugh, resigns. The president of the city council, Bernard C. Young, becomes mayor.
Papua New Guinea: Defense Minister Solan Mirisim resigns. On May 13 a reshuffle is made, William Onglo being sworn in as defense minister and Richard Maru as finance minister.
Saint Helena: Governor Lisa Honan departs. Louise MacMorran becomes acting governor. On May 11 the new governor, Philip Rushbrook, is sworn in.
Senegal: Parliament adopts a revision of the constitution, abolishing the post of prime minister. The law is promulgated by President Macky Sall on May 14.
United States: In mayoral elections in Dallas, Eric Johnson wins 20.3% of the vote, Scott Griggs 18.5%, Lynn McBee 14.0%, Mike Ablon 13.5%, Miguel Solis 10.7%, and Regina Montoya 10.5%. In San Antonio, incumbent Ron Nirenberg wins 48.7% of the vote and Greg Brockhouse 45.6%. Both runoffs will take place on June 8.
Djibouti: Abdoulkader Kamil Mohamed is reappointed as prime minister and a cabinet is announced with Hassan Omar Mohamed Bourhan as defense minister and Moumin Ahmed Cheikh as interior minister; Mahamoud Ali Youssouf remains foreign minister and Ilyas Moussa Dawaleh finance minister.
Mali: The cabinet of Prime Minister Boubou Cissé is announced with himself remaining finance minister and Salif Traoré security minister, while Tiébilé Dramé becomes foreign minister and Ibrahim Dahirou Dembélé defense minister.
North Macedonia: In the presidential runoff, Stevo Pendarovski (Social Democratic Union) wins 53.6% of the vote and Gordana Siljanovska-Davkova (Internal Macedonian Revolutionary Organization-Democratic Party for Macedonian National Unity) 46.4%. Turnout is 46.7%. Pendarovski takes office May 12.
Panama: In presidential elections, Nito Cortizo (Democratic Revolutionary Party) wins 33.4% of the vote, Rómulo Roux (Democratic Change) 31.0%, Ricardo Lombana (independent) 18.8%, and José Blandón (Panameñista Party) 10.8%. Turnout is 73.0%.
Yemen: The president of the Supreme Political Council, Mahdi al-Mashat, appoints Abdulkarim Amir al-Din Hussein al-Houthi as interior minister (sworn in May 7).
Argentina: Former acting governor of Chubut (1978) Alberto Raúl Rueda dies.
Switzerland: Carmen Walker Späh becomes president of the government of Zürich.
Slovakia: Ladislav Kamenický is appointed finance minister.
United States: In mayoral elections in Denver, incumbent Michael Hancock wins 38.6% of the vote, Jamie Giellis 24.9%, Lisa Calderón 18.5%, and Penfield Tate 14.7%. A runoff will be held on June 4. In Lincoln, Leirion Gaylor Baird wins 54.4% of the vote and Cyndi Lamm 45.4%.
Cyprus: The finance minister of North Cyprus, Serdar Denktas, resigns. Later in the day Prime Minister Tufan Erhürman announces that he will submit the resignation of his government on May 9; it is accepted on that date by President Mustafa Akinci. On May 14 Akinci asks Ersin Tatar to form a government.
Haiti: The cabinet of prime minister-designate Jean Michel Lapin is named with Audin Bernadel as interior minister while Bocchit Edmond remains foreign minister and Ronald Décembre finance minister. The defense portfolio is not yet assigned.
Iraq: The parliament of Kurdistan votes to reactivate the office of president, suspended in 2017.
Jordan: The government of Prime Minister Omar al-Razzaz resigns in preparation for a reshuffle, which is made on May 9; Salameh Hassan is sworn in as interior minister.
Nauru: Former president (2011-13) and foreign minister (2011-12, 2013, 2013) Sprent Dabwido dies.
South Africa: In parliamentary elections, the African National Congress (ANC) wins 57.5% of the vote (230 of 400 seats), the Democratic Alliance (DA) 20.8% (84), the Economic Freedom Fighters (EFF) 10.8% (44), and the Inkatha Freedom Party (IFP) 3.4% (14). Turnout is 66.0%. Results of provincial elections:
- Eastern Cape: ANC 68.7% of the vote (44 of 63 seats), DA 15.7% (10), EFF 7.8% (5); turnout 59.5%
- Free State: ANC 61.1% of the vote (19 of 30 seats), DA 17.6% (6), EFF 12.6% (4); turnout 61.3%
- Gauteng: ANC 50.2% of the vote (37 of 73 seats), DA 27.4% (20), EFF 14.7% (11); turnout 68.3%
- KwaZulu-Natal: ANC 54.2% of the vote (44 of 80 seats), IFP 16.3% (13), DA 13.9% (11), EFF 9.7% (8); turnout 66.2%
- Limpopo: ANC 75.5% of the vote (38 of 49 seats), EFF 14.4% (7), DA 5.4% (3); turnout 56.4%
- Mpumalanga: ANC 70.6% of the vote (22 of 30 seats), EFF 12.8% (4), DA 9.8% (3); turnout 63.2%
- North West: ANC 61.9% of the vote (21 of 33 seats), EFF 18.6% (6), DA 11.2% (4); turnout 57.0%
- Northern Cape: ANC 57.5% of the vote (18 of 30 seats), DA 25.5% (8), EFF 9.7% (3); turnout 64.1%
- Western Cape: DA 55.4% of the vote (24 of 42 seats), ANC 28.6% (12), EFF 4.0% (2); turnout 66.3%
Canada: Dennis King is sworn in as premier of Prince Edward Island.
Nigeria: The Court of Appeal confirms the election of Gboyega Oyetola as governor of Osun and nullifies the March 22 decision of the Election Petition Tribunal declaring the election of Ademola Adeleke.
Sierra Leone: In a cabinet reshuffle, Nabeela Tunis is appointed foreign minister.
United States: President Donald Trump nominates Patrick Shanahan, the acting secretary, as secretary of defense.
Greece: Prime Minister Alexis Tsipras wins a confidence vote in parliament (153-136).
Italy: Former foreign minister (1989-92) Gianni De Michelis dies.
Federated States of Micronesia: David W. Panuelo is elected president.
Argentina: In gubernatorial elections in Córdoba, incumbent Juan Schiaretti (Hacemos por Córdoba) wins 54.0% of the vote, Mario Negri (Córdoba Cambia) 17.8%, and Ramón Mestre (Radical Civic Union) 10.9%. Turnout is 72.8%.
Lithuania: In the first round of presidential elections, Ingrida Simonyte wins 31.4% of the vote, Gitanas Nauseda 31.2%, and Saulius Skvernelis 19.9%. Turnout is 56.8%. A runoff will be held on May 26. Skvernelis says he will resign as prime minister on July 12.
New Caledonia: In parliamentary elections, Future with Confidence wins 18 of 54 seats, the National Union for Independence 9, the Caledonian Union-FLNKS 9, Caledonia Together 7, and the Kanak and Socialist National Liberation Front (FLNKS) 6.
Andorra: Xavier Espot Zamora is elected head of government, with 17 votes against 7 for Pere López Agràs. Espot is sworn in on May 16.
Malawi: President Peter Mutharika dissolves the cabinet and assumes all ministerial powers ahead of the May 21 presidential and parliamentary elections.
Australia: Former prime minister (1983-91) Bob Hawke dies.
Canada: In parliamentary elections in Newfoundland and Labrador, the Liberal Party wins 43.9% of the vote (20 of 40 seats), the Progressive Conservative Party 42.6% (15), the New Democratic Party 6.3% (3), and independents 4.7% (2). Turnout is 60.6%.
Turks and Caicos Islands: Nigel Dakin is appointed governor, to take office in July.
Argentina: In gubernatorial elections in La Pampa, Sergio Ziliotto (Justicialist Party) wins 52.7% of the vote and Daniel Kroneberger (Cambiemos) 31.8%.
Austria: Interior Minister Herbert Kickl is dismissed. All other ministers of the Freedom Party then resign.
Congo (Kinshasa): Prime Minister Bruno Tshibala resigns. Sylvestre Ilunga Ilukamba is named to succeed him.
Ukraine: Volodymyr Zelensky is sworn in as president. Foreign Minister Pavlo Klimkin and Defense Minister Stepan Poltorak resign. Prime Minister Volodymyr Hroisman announces his resignation for May 22.
United States: Lori Lightfoot is sworn in as mayor of Chicago.