The New York Times/Siena College poll of 1,329 registered voters nationwide, including an oversample of 818 registered Republican voters, was conducted in English and Spanish on cellular and landline telephones from July 23-27, 2023. The margin of sampling error is plus or minus 3.67 percentage points for all registered voters and plus or minus 3.96 percentage points for the likely Republican primary electorate
Landline and cellular plus an oversample of republicans? Maybe someone better at statistics can say why that was needed
Landline and cellular plus an oversample of republicans? Maybe someone better at statistics can say why that was needed
Probably because the ratio of r:d is higher for actual voters than for registers voters.
If you have access, the ny times article goes into all of the methodology
Cross-Tabs: July 2023 Times/Siena Poll of the 2024 Race and National Issues https://www.nytimes.com/interactive/2023/08/01/us/elections/times-siena-poll-registered-voters-crosstabs.html?smid=nytcore-android-share