[oceanview]

projections based on samples of ACTUAL VOTES is a statistically sound method - otherwise, no result could be called until 100% of precincts reported.

[spinestein]

[projections based on samples of ACTUAL VOTES is a statistically sound method]


And the accuracy of the results is directly related to the samples being representative. When vote samples come as batches of individual precincts which can be heavily Democratic or heavily Republican or something in between that makes it very difficult to predict just how representative the sample is and therefore skews the projections in unpredictable ways.