Article by Owen Holzinger, Helen Jones and David Millett, National Assembly for Wales Research Service
The 2016 National Assembly election saw the highest voter turnout at an Assembly election since 1999. As at 18 April there were approximately 2.25 million registered voters in Wales. Of these individuals, over 1.02 million voted in the 5 May 2016 National Assembly elections. Turnout based on valid votes* was 45.4%. This is lower than the 2015 General Election (65.7%) but up 4% points on the 2011 National Assembly election (41.4%). 
At constituency level, Ceredigion saw the highest turnout (57.6%) of any constituency, while Alyn and Deeside had the lowest (34.6%). The highest ever constituency turnout was in Carmarthen East and Dinefwr in 1999 (60.9%). The lowest ever turnout was in Alyn and Deeside in 2003 (24.9%). Turnout increased in every constituency except for Alyn and Deeside, where it fell by 2.3% points from 36.9% in 2011 to 34.6% in 2016. The largest increase in turnout was in the Rhondda, where it rose from 38.1% in 2011 to 47.2% in 2016 (9.1%). To download a full list of constituency turnout figures, click image below. 
*all figures are based on valid votes counted. Valid votes are those votes cast and deemed allowable.
