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Turkey’s executive presidency referendum 2017

People across Turkey will vote on 16 April on proposals to abolish the role of prime minister and grant sweeping new powers to the president. This page tracks the latest polling and news ahead of that day.

What is being proposed?


Explainer: Turkey’s proposed presidential system > 


Rolling average

The James in Turkey rolling average records opinion polling ahead of the 16 April constitutional referendum and charts the change in results.


Evet (Yes)


Hayır (No)

Last updated: 13 April 2017

The figure above is neither an opinion poll nor a prediction: it is a rolling average. It tracks Turkish opinion polls and how they have been shifting ahead of the referendum.

A word of warning: the James in Turkey rolling average is not a scientific measure of Turkish voter intention. It does not balance between pro- and anti-government pollsters and it does not filter pollsters by reliability or data gathering methods.

What it does do is maintain a rolling average of the last four polls published by known Turkish pollsters. It weighs this result down with the previous four polling results, which helps give an idea of the trend in support while protecting the average against extreme outlier results. As the campaign progresses, it will help give an idea of how events influence the polls.

What the polls have said

[toggle title=”Click to expand: the polling data this website uses”]

MAK12 Apr56.543.5
Qriously12 Apr5941
AKAM10 Apr42.2557.75
Konda09 Apr51.548.5
Gezici09 Apr51.348.7
Qriously07 Apr56.543.5
Gezici02 Apr53.346.7
Qriously30 Mar61.438.6
ORC27 Mar55.444.6
Sonar26 Mar48.851.2
Konsensus25 Mar48.851.2
AKAM22 Mar44.4755.53
AKAM09 Mar42.457.6
ORC04 Mar57.242.8
MAK02 Mar58.941.1
Metropoll21 Feb5050
AKAM21 Feb43.656.4
Konsensus11 Feb5248
Sonar08 Feb51.848.2
Gezici03 Feb48.951.1
MAK01 Feb59.840.2
Genar29 Jan5545
Metropol27 Jan4951
AKAM22 Jan42.457.6
ORC11 Jan6238
A&G08 Jan53.246.8
Sonar29 Dec48.751.3
Gezici27 Dec4258
A&G27 Dec5842
MAK22 Dec65.734.3
ORC14 Dec6139
A&G08 Dec52.247.8
Sonar02 Nov4456


Recent referendum coverage

Referendum 2017