Clinton polls just one point ahead of Trump in a head-to-head poll of nationwide voters, 46-45.
When third-party candidates are included, Clinton's lead expands slightly to two points, 45-43, with Libertarian Gary Johnson polling at 5 percent and Green Party candidate Jill Stein at 2 percent.
The previous Fox News poll, released last week, showed Clinton ahead by five points, 49-44, in a head-to-head match, and by three points, 44-41, when third-party candidates are included in the poll.
The Fox News poll surveyed 1,107 likely voters nationwide from Nov. 1-3 via live telephone interview, with a margin of error of plus or minus three percent.
TPM's PollTracker Average for the general election shows a tossup, with Clinton leading Trump, 45.2 to 43.3.