Have you ever been an affiliate for Tupperware or Pampered Chef? Where you have home parties among your friends and family, then attempt to network outward to sell products? The same concept is one you need to expand your base when running for election.
Once you have decided that you will be a candidate for office, you need to identify the friends and family you have residing within the district you will run. Since they are likely to be supporters of yours, you will approach them to host a home party meet & greet.
Set the date with the person and let them know that you would like them to introduce you to their friends and family. They will deliver a short introduction at the event and you will “sell” your message to them.
At the party, you will need to identify the people who are supportive of your message and ask them to volunteer. If they agree, inform them you would like to have them do the same thing and host a home party of their own to introduce you.
This is something that needs to be done early in a campaign to get initial support like campaign contributions and volunteers. If this is a statewide race, it should begin around one year out from the General Election. If you want to make a bigger impact, you need to have people willing to help you out. This is a relatively low cost way to make those contacts and get the face to face time with people who will be your voters.