By Jim EllisDec. 18, 2018 — A pair of Democratic presidential primary polls were just released — one with a national respondent universe, and the other for the first-in-the-nation Iowa Caucus. In both, former vice president and ex-Delaware senator Joe Biden is staked to a lead. The most disappointing performer appears to be Massachusetts Sen. Elizabeth Warren, who settles into middle-of-the-pack status in both surveys.
CNN conducted the national poll (conducted by the SSRS firm; Dec. 6-9; 463 Democrats and independent-leaning Democrats). For two reasons, this survey is of little statistical relevance. First, the national sample of only 463 individuals is very low, thus leading to a huge error factor. Second, as we know, the presidential nomination process is decided by winning delegate support in every state and territory, thus monitoring a candidate’s national standing, while being of media interest, actually provides little in the way of tangible political value.
The Des Moines Register/CNN Mediacom Iowa poll (conducted by Selzer & Company; Dec. 10-13; 455 likely Iowa Democratic Caucus attenders) is the more relevant of the two studies since it previews the Iowa Caucus, which is responsible for apportioning the state’s nominating delegates and tentatively scheduled for Feb. 3, 2020.
In the national poll, Biden places first with 30 percent preference followed by Vermont Sen. Bernie Sanders (I/D-VT) who posts 14 percent. These are the only two potential candidates in double figures.