Thai Prime Minister Abhisit Vejjajiva says he will step down as leader of his Democrat Party.
The announcement comes a day after the party lost to the opposition Puea Thai Party led by Yingluck Shinawatra.
The 44-year-old businesswoman who wasn't even in politics two months ago is set to become Thailand's first female prime minister.
Her brother is the fugitive ex-premier Thaksin Shinawatra.
compiled from agency reports