PPP (D) released the results of a new poll, in which respondents from South Carolina were asked for whom they will vote: Donald Trump or Hillary Clinton.
PPP (D) poll results
Of those who replied, 39.0% said that they intend to vote for former First Lady Hillary Clinton, whereas 41.0% said that they would give their vote to businessman Donald Trump.
The poll was carried out from August 9 to August 10 with 1290 registered voters. There is a sampling error of +/-2.7 percentage points. Considering this error margin, the race is currently a statistical tie.
Putting the results in context
Individual polls often include large biases, and should be treated with caution. Rather than 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.
For the following analysis, we translate the candidates' raw poll numbers into two-party vote shares. This procedure yields values of 48.8% for Clinton and 51.3% for Trump. On August 16 Clinton obtained 52.8% in the PPP (D) poll and Trump obtained only 0.0%.
Comparison to the combined PollyVote
The most recent PollyVote expects Trump to gain 54.4% of the two-party vote in South Carolina. That is, the combined PollyVote is 3.1 points above his polling numbers. The PollyVote forecast is thus outside the poll's margin of error.