This is a well documented survey, but not quite as clean as others from Gallup. By not having an "other candidate" option for the 2-candidate questions, this poll is probably tarnished somewhat by collecting responses from people who do not support either of the "front-runner" candidates. Does not provide evidence to support the choice of front-runners. Categorization of open-ended responses may be subjective. Point spread of open-ended question results due to margin of error makes ... More »

The biggest problem with this is that it promotes binary thinking by arbitrary selection of two candidates very early in the process.

A good open-ended survey into the criteria Americans use in their selection process. Free access to this report may expire on 3/30. For results based on the total sample of national adults, one can say with 95% confidence that the maximum margin of sampling error is ±3 percentage points.