This is an entry from: LIVE: Turkey votes on whether to expand president's powers
Main opposition party CHP contests results
16 April 2017 18:20 BST
"Everyone is showing vote count data from (state-run) Anadolu news agency," Bulent Tezcan, Turkish MP from the main opposition People Republican's Party (CHP) told CNN Turk live.
"Our data shows the No count to be ahead in various places, a lot more than Anadolu is reported."
"Opening the ballot boxes and counting the votes are a different matter," he added.
Meanwhile, CHP's Erdal Aksunger said: "Judges are violating the results. I call on everyone not to leave polling booths. we will contest 37 percent of the results."