PPP (D) published the results of a new poll. In this poll, interviewees from Maryland were asked for whom they will vote: Democrat Hillary Clinton or Republican Donald Trump.
PPP (D) poll results
Of those who responded, 61.0% said that they intend to vote for former Secretary of State Hillary Clinton, whereas 28.0% revealed that they would give their vote to billionaire Donald Trump.
This poll was conducted from April 15 to April 17, among a random sample of 879 registered voters. If one takes into account the poll's error margin of +/-3.3 percentage points, the gap between both candidates is statistically significant.
Putting the results in context
Single polls may include substantial biases, and should be interpreted with caution. At the very least, one should examine how a poll's results compare to benchmark forecasts.
In order to make the results comparable to benchmark forecasts, we convert them into shares of the two-party vote. This procedure results in values of 68.5% for Clinton and 31.5% for Trump.
Comparison to other polls
An average of recent polls in Maryland has Clinton at 69.0% of the two-party vote. This value is 0.5 percentage points higher than her corresponding numbers in the PPP (D) poll. This difference is within the poll's margin of error, which means that the poll is not an outlier.
Comparison to the combined PollyVote
The latest PollyVote anticipates Clinton to gain 64.3% of the two-party vote in Maryland. Hence, the PollyVote is 4.2 points below her polling numbers. The PollyVote forecast is thus outside the poll's sampling error.