Keep one thing in mind, this is a primary, NOT a presidential election. The process only serves as a poll by the democratic party to help them determine who they will nominate for president. They can nominate the candidate who got 2% of the votes if they choose, there are no legal requirements here. They will, as a rule, nominate the person who got the most votes because that is in their best interest, but it is totally up to them. Just because they ask the peoples' opinions does not require them to honor those opinions.