British Prime Minister David Cameron leaves 10 Downing Street in central London on May 4, 2016. Londoners will chose their new mayor on May 5, while Scotland, Wales and Northern Ireland will also elect new national assemblies, with elections also taking place in 124 English local authorities. The round of elections is closely followed by the EU membership referendum on June 23, a major test of authority for Conservative Prime Minister David Cameron, who wants Britain to stay in the European Union. / AFP / JUSTIN
{"Image ImageDescription": "British Prime Minister David Cameron leaves 10 Downing Street in central London on May 4, 2016. \nLondoners will chose their new mayor on May 5, while Scotland, Wales and Northern Ireland will also elect new national assemblies, with elections also taking place in 124 English local authorities. The round of elections is closely followed by the EU membership referendum on June 23, a major test of authority for Conservative Prime Minister David Cameron, who wants Britain to stay in the European Union. / AFP / JUSTIN TALLIS        (Photo credit should read JUSTIN TALLIS/AFP via Getty Images)"}