The online poll shows Trump with 48.52 percent to Clinton's 47.73 percent after both candidates edged up slightly overnight. Correspondingly, the percentage of "other" voters, defined as anyone who did not select Trump or Clinton, fell to its lowest level to date, 3.74 percent.
Friday is the second-consecutive day the poll shows Trump leading Clinton by a slim margin. Clinton had led in the poll since the conclusion of the Democratic National Convention.
The UPI/CVoter online tracking poll surveys about 200 people each day, leading to a sample size of roughly 1,400 people during any seven-day span.
Over the course of a full seven-day sampling, Trump has gained 4 points, while Clinton has dropped 3.3 points.
Because the poll is conducted online and individuals self-select to participate, a margin of error cannot be calculated. The poll has a credibility interval of 3 percentage points. This seven-day span includes data collected from Aug 18-24, when 1,720 individuals were surveyed. Of them, 1,187 identified themselves as likely voters.