Question:

About this Poll
To ensure all Maryland residents are represented, the Goucher Poll is conducted using random
digit dialing (RDD) of a county-level stratified random sample using landline and cellular
telephone numbers. The sample of telephone numbers for the survey is obtained from Survey
Sampling International, LLC (http://www.surveysampling.com/).
The survey was conducted Saturday, September 26, to Thursday, October 1, 2015. During this
time, interviews were conducted 10a.m-7p.m on Saturday, 12-9 p.m. on Sunday and 5-9 p.m.
Monday through Wednesday. The Goucher Poll uses Voxco Computer-Assisted Telephone
Interviewing (CATI) software to administer its surveys. Interviews are conducted by a staff of
professionally trained, paid, student interviewers.
Interviewers attempted to reach respondents with working phone numbers a maximum of five
times. Only Maryland adults—residents aged 18 years or older—were eligible to participate.
Interviews were not conducted with adults who were reached at business or work numbers. Fiftyfour
percent of the interviews were conducted on a cell phone, and 45 percent were conducted on
a landline.
Interviews for this survey were completed with 880 Maryland residents, of these residents 739
indicated they were registered to vote in Maryland. For a sample size of 880, there is a 95
percent probability the survey results have a plus or minus 3.3 percentage point sampling error
from the actual population distribution for any given survey question. For sample size of 739
registered voters, there is a 95 percent probability the survey results have a plus or minus 3.6
percentage point sampling error from the actual population distribution for any given survey
question. Margins of error are higher for subsamples.