KABC/SurveyUSA released the results of a new poll, in which respondents from California were asked for whom they will vote: Hillary Clinton or Donald Trump.
KABC/SurveyUSA poll results
Of those who answered the question, 59.0% said that they plan to vote for former First Lady Hillary Clinton, while 33.0% declared that they would give their vote to billionaire Donald Trump.
This poll was conducted from September 27 to September 28, among a random sample of 732 likely voters. There is a sampling error of +/-3.6 percentage points. Considering this error margin, the gap between both candidates is statistically significant.
Putting the results in context
In general, however, one should not have too much faith in the results of single polls, as they often contain large errors. Instead of trusting the results from single polls, one should consult combined polls or, even better, the combined PollyVote forecast that uses different methods and data.
In order to make the results comparable to forecasts from other methods, one can translate them into two-party vote shares. The resulting figures are 64.1% for Clinton and 35.9% for Trump.
Comparison to other polls
Clinton currently runs at 61.7% of the major two-party vote according to an average of recent polls in California. Compared to her numbers in the KABC/SurveyUSA poll Clinton's poll average is 2.5 percentage points worse. This difference is within the poll's margin of error, which suggests that the poll is not an outlier.
Results compared to the combined PollyVote prediction
The latest PollyVote expects Clinton to gain 61.3% of the two-party vote in California. That is, Polly's combined forecast is 2.8 points below her polling numbers. Again, a look at the poll's error margin shows that this deviation is negligible.