^ not surprising. Approval rating for clinton is maybe one of the lowest ever recorded. Add to it the possibility of her losing to trump. No wonder democrats prefer to keep obama.
It depends on who they poll, the area, age groups, ethnic groups and the number polled. even if they poll the usual one thousand, how does that small number represent 300 million?
Was less than 1000 democratic voters. Only 384. And with a margin of error of 5 percent.
http://www.wparesearch.com/uncategorized/two-thirds-of-democrats-prefer-keeping-obama-over-clinton-presidency/"WPA Research conducted a national survey of registered voters. WPA selected a random sample of registered voters from various state voter files using Registration Based Sampling (RBS). The sample for this survey was weighted based on gender, age, ethnicity, and geography. Respondents were contacted by phone June 22-23 and June 26-27. The study has a sample size of 801 likely voters with a margin of error of ±3.5 percent in 95 out of 100 cases. The Democratic subsample has a sample size of 384 voters, which has a margin of error of ±5.0 percent in 95 out of 100 cases."