#voteswap

Swap my Vote now has an API

This means that any voter recommendation, matching, or tactical site can use a link/button to send a voter to a web address which will pre-populate their voting preferences, allowing for a relatively frictionless journey for the voter.

For example*: if you would like to vote Green, but are prepared to vote Labour in a swap, you can click www.swapmyvote.org/uk/swap?preferred_party_name=green_party&willing_party_name=labour and those vote-swapping preferences will be automatically filled in for you. 

*We have prepared a table of short links for use by campaigning organisations and voting alliances here.

Swap my Vote API v1.0

We currently have a single end point to pre-populate some of the fields that a user can choose:

http://www.swapmyvote.org/uk/swap

Parameters should be passed in the query string, e.g.

http://www.swapmyvote.uk/uk/swap?preferred_party_name=labour

Available parameters are:

preferred_party_name - The party that the user would ideally like to vote for, say if all votes counted equally nationally.

willing_party_name - The party that the user is willing to vote for, say tactically.

The party names should be lowercased and use underscores instead of spaces. We support 7 parties at the moment, with the follow canonical names on Swap my Vote:

labour

liberal_democrats

green_party

conservatives

ukip

snp