Take a good, high quality picture of the quilt with close ups and post on social media, like Facebook with information on how to get tickets. Ask members to "share" the post on their FB page.
When I did the raffle quilts for our motorcycle club, all members were asked to sell tickets. The quilt was also prominently displayed at any events we held or the dealership held and there was a table set up for ticket sales. We sold tickets for approximately 5 months.
One member had a sneaky but effective way of doing it. He would approach people and say "do you have a dollar", usually someone would whip one out to give him thinking he needed a dollar and was short. As soon as they presented the dollar he would hand them a raffle ticket. Most people took it well and the few that got mad he would take the ticket back but few got that mad and most laughed at his ingenuous albeit sneaky tactic.