Illinois

The winner of the statewide race wins a certain percentage of the delegates. I don't know that number for Illinois.

Then, if you vote for another candidates' listed delegates they can, if they win the most votes, become a delegate for said candidate. So if it said to vote for 8 delegates and you voted for only for 5 because those 5 were the only Warren delegates listed, then if those 5 are in the top 8 for total votes, they will go to the convention as Warren delegates. These delegates are voted on in each respective congressional district. Also, if it told you to vote for 8 and their were only 5 for Warren listed, that means that the Warren campaign was only able to recruit 5 people to run for delegate in that particular congressional district. This would mean that 3 delegates from other candidates would be in the top 8 and go to the convention.

It's slightly complicated. I hope I helped.