president_primary_polls: 989
| rowid | question_id | poll_id | cycle | state | pollster_id | pollster | sponsor_ids | sponsors | display_name | pollster_rating_id | pollster_rating_name | fte_grade | sample_size | population | population_full | methodology | office_type | start_date | end_date | sponsor_candidate | internal | partisan | tracking | nationwide_batch | created_at | notes | url | stage | party | answer | candidate_id | candidate_name | pct |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 989 | 119183 | 64597 | 2020 | Massachusetts | 290 | MassINC Polling Group | 83 | WBUR | MassINC Polling Group | 198 | MassINC Polling Group | A/B | 426 | lv | lv-d | Live Phone | U.S. President | 2/23/20 | 2/26/20 | 0 | 0 | 0 | 2/28/20 05:23 | https://www.wbur.org/news/2020/02/28/wbur-poll-sanders-opens-substantial-lead-in-massachusetts-challenging-warren-on-her-home-turf | primary | DEM | Biden | 13256 | Joseph R. Biden Jr. | 9.0 |