WBUR/MassINC released the results of a new poll, in which respondents from Massachusetts were asked for whom they will vote: Republican Donald Trump or Democrat Hillary Clinton.
WBUR/MassINC poll results
According to the results, 60.0% of respondents will give their vote to former Secretary of State Hillary Clinton, whereas 31.0% are going to vote for businessman Donald Trump.
This poll was conducted from September 7 to September 10, among a random sample of 506 likely voters. There is a sampling error of +/-4.4 percentage points. Considering this error margin, the gap between both candidates is statistically significant.
Putting the results in context
In general, however, a good strategy is to not have too much faith in the results of single polls, since they sometimes incorporate large errors. Instead of relying on results from single polls, the best practice is to consult combined polls or, even better, a combined forecast that relies on different methods and data.
In order to make the results comparable to benchmark forecasts, one can translate them into two-party vote shares. The respective figures are 65.9% for Clinton and 34.1% for Trump.
Results compared to other polls
An average of recent polls in Massachusetts has Clinton at 63.2% of the two-party vote. Relative to her numbers in the WBUR/MassINC poll Clinton's poll average is 2.7 percentage points worse. This difference is within the poll's margin of error, which suggests that the poll is not an outlier.
Comparison to the combined PollyVote
The current PollyVote expects Clinton to gain 63.9% of the two-party vote in Massachusetts. This means that the PollyVote is 2.0 points below her polling numbers. Again, a look at the poll's margin of error suggests that this deviation is insignificant.