Just out of interest, the people who say candidate hasn't knocked your door, where I live council wards are 11k properties and MPs constituencies are 80k. Even with year round campaigning you can't speak to everyone.
And leaflets and letters rely on money for printing and volunteers to deliver.
Obviously some candidates won't be bothered, but a lot of the local politicians I know work hard and try to talk to as many people as possible. I've been told myself as an activist that they never hear from the MP, I've put a letter a month through their door for five years from him and door knocked in their street 3 times, maybe they were out but we tried!
Information is a 2 way street, you can go to community meetings, advice surgeries, hustings, even parliament to speak to your MP. You can email, phone, Facebook, tweet your local candidates, people should take some responsibility for finding information themselves.
(I voted Labour with a heavy heart for Mayor, no locals)