Guide to political douchebaggery, rule 2: Hiring a loudspeaker truck is a good start, but to make yourself more "accessible to the people" (ha!), you should make sure to be seen beside the truck on busy street corners.
Pro-tip: People love it when you use a bullhorn to talk at them while they're stuck at the light. If you have no bullhorn, just wave your hand (gloved, of course) and look like you care about the peons as they drive by.