Embattled Prime Minister Yingluck Shinawatra was among the early voters, casting her ballot in front of the media at a polling station at the Klong Lamchiak School near her house here. TV channels said protesters were not present there.
There were no reports of major violence during the polls that ended this afternoon and was relatively peaceful.
The counting began immediately after the voting ended. After the counting at each station is completed, the results would be sent to the Election Commission (EC) and the outcome will not be announced until after the EC has re-organized elections for advance voting and for blocked polling stations.
EC cancelled the poll in 9 of 14 provinces in the South, a stronghold of opposition Democrat Party. The provinces of Songkhla, Trang, Phatthalung, Phuket, Surat Thani, Ranong, Krabi, Chumphon and Phangnga had no voting at all.
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All polling stations functioned in the northern and northeastern regions - strongholds of the ruling Pheau Thai party of Yingluck - and 122 out of 127 polling stations opened in the central and eastern provinces, officials said.
Two journalists - a Thai reporter and an American photojournalist - were among the injured.
More than 93,000 polling stations were set up across the country and around 120,000 police personnel deployed. Army deployed 5,000 soldiers in the capital to prevent violence. Over 47 million voters wre eligible to cast their vote today.
The EC will set up a new election date for the areas unable to open today. It could be one week after the new advance voting day scheduled for February 23.
Protesters have been holding rallies across Bangkok and have blocked major intersections for the past two months calling for Yingluck's government to quit, an unelected people's Council to be formed and the polls to be scrapped.