This will be done by VNS. The Associated Press collects the county vote as well.

CNN: How does CNN make election projections?

In the rare cases where CNN samples and computations do not agree with the VNS computations, CNN's analysts will be even more cautious in our projections.

CNN: How does CNN make election projections?

These separate CNN samples and computations will allow us to confirm the results that we are receiving from VNS so that we can be confident in our projections.

CNN: How does CNN make election projections?

The first indication of the vote comes from the exit polls conducted by VNS. On Election Day, VNS interviewers stand outside of hundreds of sample precincts across the country.

CNN: How does CNN make election projections?