Following the October 15, 2019, fourth Democratic debate, Drudge Report ran an online poll on its website and asked readers who won the debate. A total of 208,001 votes were cast, with Gabbard receiving 79,881 votes (38%), Yang receiving 37,944votes (18%), Buttigieg receiving 25,337 votes (12%), Warren receiving 14,405 votes (7%), Kloubachar receiving 13,142 votes (6%), Biden receiving 11,246 votes (5%), Steyers receiving 7,791 votes (4%), Sanders receiving 7,672 votes (4%), and the remaining candidates each receiving 1% or fewer votes. The sample size for this poll is much larger than is typical for polls such as the GallupPoll.

Explain why the poll may give unreliable information about the voting population, even with such a large sample size.

Choose as many as are true.

This poll may give unreliable information because the sample size is too large.

The sample size is too small to represent millions of voters.

The name of the problem is non-response because many in the population of all voters did not respond.

This poll is very likely to give unreliable information because it was a voluntary response poll.

This poll may give unreliable information because it was conducted by a newspaper rather than a professional polling organization.

The name of the problem is under-coverage or selection bias because only people who saw the invitation and were interested responded.

The name of the problem is response bias because the sample contains only those who felt strongly enough to respond .