PPP (D) published the results of a new poll. In this poll, interviewees from Maryland were asked for whom they will vote: Donald Trump or Hillary Clinton.
PPP (D) poll results
Of those who replied, 61.0% said that they will vote for former First Lady Hillary Clinton, whereas 28.0% revealed that they would give their vote to businessman Donald Trump.
The poll was carried out from April 15 to April 17 with 879 registered voters. Taking into account the poll's sampling error of +/-3.3 percentage points, the spread in voter support is statistically significant.
Putting the results in context
Single polls should be treated with caution, because they can incorporate substantial biases. At least, one should examine how a poll's results compare to benchmark forecasts.
For the following analysis, we translate Trump's and Clinton's raw poll numbers into shares of the two-party vote. This procedure yields figures of 68.5% for Clinton and 31.5% for Trump.
Comparison to other polls
Looking at an average of Maryland polls, Clinton's two-party vote share is currently at 69.0%. This value is 0.5 percentage points higher than her corresponding numbers in the PPP (D) poll. This difference is within the poll's sampling error, which means that the poll is not an outlier.
Comparison to the combined PollyVote
The most recent PollyVote predicts Clinton to gain 64.5% of the two-party vote in Maryland. Hence, the PollyVote forecast is 4.0 points below her polling numbers. The PollyVote forecast is therefore outside the poll's error margin.