Question:

About this Poll
The findings come from a Field Poll completed September 17-October 4, 2015 among 1,002 registered
voters in California, of whom 214 are consider likely to vote in next year's June Republican presidential
primary election.
Interviews were administered by telephone using live interviewers in English and Spanish. Individual voters
were sampled at random from listings derived from the statewide voter registration rolls. Once a voter's name
and telephone number had been selected, interviews were attempted with voters on their landline or cell
phone depending on the source of the listing from the voter file and the preference of the voter. In this survey
787 of the interviews were completed with voters on their cell phones, while 215 were completed on a
landline or other phone.
Up to six attempts were made to reach, screen and interview each randomly selected voter on different days
and times of day during the interviewing period. After the completion of interviewing, the sample was
weighted to align it to the proper distribution of voters by race/ethnicity and other demographic, geographic
and party registration characteristics of the state's registered voter population.
Sampling error estimates applicable to the results of any probability-based survey depend on sample size and
the percentage distributions being examined. The maximum sampling error for results from the Republican
primary voter sample in this report is +/- 7.0 percentage points. These estimates are based on survey findings
in the middle of the sampling distribution (i.e., results at or near 50%). Percentages at or near either end of
the tail of the distributions (i.e., results closer to 10% or 90%) have somewhat smaller margins of error.
There are other potential sources of error in surveys of public opinion besides sampling error. However, the
overall design and execution of this survey sought to minimize these other possible errors.