One of the best grassroots techniques to get a constituent's vote is to visit them in person. Whether a volunteer or the cadidate personally is doing the canvas you need to have some leave behinds ready so the voter knows who was calling on their door.
To paraphrase America Coming Together's canvassing guidelines:
Door Hangers | Literature Bags | Pencils | ||||
Pens | Sticky Notes | Tote Bags |