NASA NASA delays the launch of Space Shuttle Discovery on STS-133, its final mission, due to a circuitry glitch.
United Kingdom House of Commons Members of the United Kingdom House of Commons vote to hold a referendum on May 5 to replace the first-past-the-post system with the alternative vote.
U.S. Midterms The Republicans win control of the House of Representatives with the largest turnover of seats since 1948 and the largest gain for Republicans since 1894.
The Democrats retains a clear majority in United States Senate, though the Republicans pick up seats in Illinois, Pennsylvania, Arkansas, North Dakota, Indiana and Wisconsin
The Republican Party wins six gubernatorial elections including Pennsylvania, Michigan, Tennessee, Kansas, Oklahoma and Wyoming.
Voters in the United States go to the polls for elections for the House of Representatives, 37 Senate seats, 39 state and territorial governors and various local seats and issues.
All India Congress Committee All India Congress Committee meeting begins at Talkatora Stadium in New Delhi.
TD Irish TD and former government minister Jim McDaid resigns suddenly from Dáil Éireann after disagreeing with his colleagues, once again reducing the fragile majority of the country's government and provoking new calls for a general election ahead of a hard-hitting budget; four seats are now vacant following the latest resignation.
Silvio Berlusconi Italian Prime Minister Silvio Berlusconi is subjected to calls for his resignation by opposition politicians amid reports of his involvement with a 17-year-old girl. He responds by saying "It's better to like beautiful girls than be gay", causing further anger and leading to demonstrations by gay groups.
Civic United Front Salum Khalfani Bar'wani of the opposition Civic United Front party is elected as a Member of Parliament, the first albino to serve elective office in Tanzania.
Zambia A court in Zambia grants bail to two Chinese managers accused of attempted murder for shooting and injuring 11 coal miners during a protest over pay and working conditions.
Prime Minister UK Prime Minister David Cameron and the French President Nicolas Sarkozy meet in London and sign a treaty allowing joint development and testing of nuclear warheads, and outline plans for a joint army expeditionary force.
Japan Japan temporarily recalls its ambassador to Russia amid a dispute over a visit by President Dmitry Medvedev to the Kuril Islands.
Kuomintang A senior military intelligence officer is arrested in Taiwan for being a double agent for China.
Venezuelan President President of Venezuela Hugo Chávez welcomes President of Colombia Juan Manuel Santos to Caracas.
Merapi Continuing eruptions of Mount Merapi in Java, Indonesia, lead to cancellation of flights to the nearby city of Yogyakarta.
Tarapur 17 people are killed and three others injured when a truck carrying them overturned at Tarapur talukav near Indranaj in India. The truck was on its way from Surat to Bhavnagar.
California California voters reject a proposition that would have suspended indefinitely the operation of that state's cap-and-trade bill, Global Warming Solutions Act of 2006, known as "AB 32".
BP BP raises the estimated cost of the Deepwater Horizon oil spill in the Gulf of Mexico to $40 billion.
Fudan University Fudan University releases the results of a survey that shows that 72.6% of Shanghai residents visited Shanghai Expo, an average of 2.31 times per resident.
At least 17 co-ordinated explosions A series of bomb blasts in Baghdad, Iraq, kill at least 63 and injure 180.
Mexico Parcel bombs explode at the Mexican, Russian and Swiss embassies in Greece. Similar packages were sent or addressed to the embassies of Belgium, Bulgaria, Chile, Germany and the Netherlands over the past two days.