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About this Poll
Interviewing for The Roanoke College Poll was conducted by The Institute for Policy and Opinion Research at Roanoke College in Salem between February 16 and February 24. A total of 466 Virginia Republican likely voters and 415 Virginia likely Democratic voters were interviewed. Telephone interviews were conducted in English. The random digit dial sample was obtained from ASDE Survey Sampler and includes both Virginia land line and cellphone exchanges so that all cell phone and residential land line telephone numbers, including unlisted numbers from Virginia exchanges, had a known chance of inclusion. Cellphones constituted 25 percent of the Republican sample and 32 percent of the Democratic sample.

Questions answered by the entire sample of 466 Republican likely voters are subject to a sampling error of plus or minus approximately 4.5 percent at the 95 percent level of confidence, and the sample of 415 Democratic likely voters are subject to a sampling error of plus or minus approximately 4.8 percent. This means that in 95 out of 100 samples like the one used here, the results obtained for the Republicans should be no more than 4.5 percentage points above or below the figure that would be obtained by interviewing all Republican primary election voters in Virginia who have a home telephone or a cellphone. Where the results of subgroups are reported, the sampling error is higher. The data was statistically weighted for gender, race, and age. Weighting was done to match the Virginia 2012 Republican primary election exit poll and the 2008 Virginia Democratic primary election poll. The margin of error was not adjusted for design effects due to weighting.