The following question was on the referendum ballot paper:

At present, the UK uses the 'first past the post' system to elect MPs to the House of Commons. Should the 'alternative vote' system be used instead?

Local totals for the London Borough of Merton:

Yes: 18,375, No: 33,573

YesNo
​Votes18,37533,573
​%​35.37%​64.63%

The number of ballot papers rejected was 109. The turnout for Merton was: 39.92%.

Detailed electorate and turnout