Hanging Out On Street Corners

In the Election Watch today, there are two entries re: candidates and their supporters hanging out on street corners with signs, soliciting the votes of passing motorists. Councilwoman Linda Wilhelm heads an incumbent group, that has included Mayor Clay Larkin and Councilman Ron Jacobson at Spokane & Seltice Way/Post Falls. Mary Souza and 2 other supporters of the challenger ticket are hanging out @ 4th & Best/CdA, near Davis Donuts.

Question: What impact does these election day demonstrations of support on street corners have?