Families will all vote the same. Usually the oldest person in the family will decide whom to vote for. The rest of the members will follow the advice of their elders and vote the same way. Political candidates know these families and know who to campaign with. They know by convincing one person in a family to vote their way, others will also vote that way.
Many candidates organize into groups with selected people running for selected offices.
Many political favors are paid in this manner. John Smith is running for County Attorney. In return, the influential person agrees to back the candidate, both publicly and financially. These rallies are more like giant picnics. Food and drink are plentiful and kids play on the grounds.