‘This’ is a very politicised place but for those that think electoral canvasses are a bit random here’s my run down on how to do it (only 2 1/2 parties even get close)
You should have a ‘marked register’ showing what every person canvassed said on the doorstep last time – a definite vote, a possible, a no chance.
That old register can then be marked further against a register provided post count by the electoral office to check who didn’t get out to vote.
Then compare your old marked register with the new one and you can get a list of people registered that previously declared an intention to vote for you, those that may, those that won’t, additions since last time and even people that said they would but didn’t turn up.
You can provide that information to canvassers so they tailor the message; get out and vote, why you should vote for us, ignore the door or ‘where the feck where you last time?’ (they will turn up if you show you know they didn’t bother before).
You again mark them on your register as voters, possibles or no chance.
You filter the possibles – then revisit and try to convert.
On election day you go out and target every voter that declared an intention to vote for you. Motivate, ignore those that said they weren’t voting for you (some one that cares can remind them).
If you are mad as fuck you can put people in/outside polling stations marking off people as they vote and then (illegally?) attempt to filter out information to others who will visit your declared voters that haven’t turned up.
Alternatively, you can play knock the doors and waste your time for 6 weeks while others be a bit professional.
(much of the above is either against the law or requires registration with the Data Protection folks)