UK's Cameron says he will resign by Wednesday

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Prime Minister David Cameron says he will step down on Wednesday, making way for Theresa May to succeed him as British leader.

Cameron says it's clear May has "the overwhelming support" of Conservative lawmakers. He says May's rival Andrea Leadsom made the right decision to withdraw from the race, ending the party leadership race.

Cameron says he will attend a final session of Prime Minister's Questions in the House of Commons on Wednesday before going to visit Queen Elizabeth II and tendering his resignation.

The queen has the formal role of appointing the new leader.