I have just bought a book, published in 1935, entitled "Rules and Conduct for Agents in a Parliamentary Election Campaign". The opening chapter includes the following priceless advice:
"A Candidate's Agent should ensure that motor cars are available to transport voters to and from the place of poll. This is particularly important in rural constituencies which contain high numbers of farmers, crofters, woodsmen, country folk and the physically lame. It is advisable that a flatbed truck or hay cart is procured onto which even the most severely crippled can be hoisted and transported to the place of poll."
Further pre-war election winning tips will be published as and when I find them.