Thais voted Sunday to choose legislators for the upper house of parliament in a test for Prime Minister Yingluck Shinawatra's beleaguered government.
Thailand Votes in Upper House Election

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Gear and weapons of victims are placed by the road as security forces inspect the site of a bomb attack on police in the troubled southern Thai province of Narathiwat, March 30, 2014.

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Two policemen were killed and three wounded in a roadside bomb attack as they were traveling to provide security to polling stations for Sunday's Senate elections. Here security forces inspect the site of a bomb attack on police in the troubled southern Thai province of Narathiwat, March 30, 2014.

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Soldiers check electoral lists as they prepare to vote at a polling station in Bangkok, March 30, 2014.

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Officials wait for voters at a polling station, in Bangkok, March 30, 2014.