On March 25, NBC/WSJ/MaristNBC/WSJ/Marist released the results of a new poll, in which respondents from Iowa were asked for whom they would vote if the parties' nominees were Hillary Clinton for the Democrats and Donald Trump for the Republicans.
The results show that 48.0% of interviewees would vote for the Democrats, whereas 40.0% said they would vote for Republican party. The poll was conducted between January 2 and January 7. The sample size was 1470 registered voters. The sampling error is +/-2.6 points.
Other survey prognoses
Translating these results into two-party vote shares yields values of 54.6% for the Democrats and 45.5% for the Republicans. In comparison to the average results of other polls in Iowa the Democrats did worse in this poll.