The NBC News/Wall Street Journal poll is expanding the number of cell phone-only respondents in its sample, the Republican and Democratic firms that conduct the survey announced Tuesday.
After increasing the portion of cell phone-only respondents to 25 percent of the total sample in February, the NBC/WSJ polling team will now increase the percentage of cell-phone only respondents to 30 percent of the total sample — or 300 out 1,000 respondents.
The change is an effort to better “reach younger and more ethnically diverse respondents.”
