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Source: Marist College (url)

CandidatePolitical PartyPollGraphPoll Details
Poll Date: 2015-07-21
Number Polled: 320
Margin of Error: 6%
Voter Type: Likely

Clinton with Strong Lead in Iowa

 By: leip (I-NY) on 2015-08-31 @ 10:53:22


About this Poll
This survey of 1,042 adults was conducted July 14th through July 21st, 2015 by The Marist Poll sponsored and funded in partnership with NBC News. Adults 18 years of age and older residing in the state of Iowa were interviewed in English by telephone using live interviewers. Landline telephone numbers were randomly selected based upon a list of telephone exchanges from throughout the state of Iowa from ASDE Survey Sampler, Inc. The exchanges were selected to ensure that each region was represented in proportion to its population. Respondents in the household were selected by asking for the youngest male. To increase coverage, this landline sample was supplemented by respondents reached through random dialing of cell phone numbers from Survey Sampling International. The two samples were then combined and balanced to reflect the 2010 Census results for age, gender, income, race, and region. Results are statistically significant within ±3.0 percentage points. There are 919 registered voters. The results for this subset are statistically significant within ±3.2 percentage points. There are 342 voters in the potential Republican caucus electorate and 320 voters in the potential Democratic caucus electorate. The results for these subsets are statistically significant within ±5.3 percentage points and ±5.5 percentage points, respectively. The error margin was not adjusted for sample weights and increases for cross-tabulations.

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