… The first problem with trying to measure the attitudes of a target population of the national Republican primary electorate is that such an electorate does not actually exist in the quite the same way that other electorates do. The presidential nominating process is a dynamic one, with primaries and caucuses that could theoretically play out over a five-month period. The size and shape of the electorate in each state will be determined by whether the race is still competitive when it reaches a particular state and by the number of candidates still running. CONT.
Ken Goldstein (U. of San Francisco), Bloomberg Politics