Main street are the people who clean our streets, pick up our garbage, deliver the mail faithfully, nurses who care for us, doctors who heal us, service men and women protecting us, Moms and Dads nurturing their children, teachers teaching, bus drivers getting our children to school, janitors keeping our buildings clean, bussers cleaning our tables, servers bring our food to us at our favorite restaurants, and pilots getting us from point A to point B are "Main Street". No political party needed and life will go on no matter who is elected president. 

This tells me that both parties are totally irrelevant to Main Street. Most people don't give a hoot about Rs or Ds. Most people, if they do have a political preference call themselves undeclared or non-party. As a matter of fact the majority of registered voters are in that category.