Clinton leads the head-to-head match by six points, 50-44, among likely voters including leaning votes.
The former Secretary of State holds the same lead, 50-44, when third-party candidates are included, with Libertarian Gary Johnson at 4 percent and Green Party candidate Jill Stein at 1 percent.
Clinton's lead has narrowed since Monmouth University polled the national general election in mid-October. Her lead moved from +12 in October to +6 in both the head-to-head and third-party inclusive races.
The Monmouth University poll surveyed 748 likely voters nationwide from Nov. 3-6 via live telephone interview, with a margin of error of plus or minus 3.6 percent.
TPM's PollTracker Average for the general election shows Clinton leading Trump, 47.5 to 43.1.