69% of the 900 registered voters polled in the September NBC News/Wall Street Journal public opinion poll said they do not like Trump personally, regardless of their feelings about his policies.

Why it matters: Despite the conventional wisdom that incumbents have an upper hand in general elections, the poll indicates that Trump is the most disliked president out of his 5 most recent predecessors.

Details: The poll found Trump's approval rating rests at 45%, which is on par with where Barack Obama and Bill Clinton stood at this point in their presidencies. Both Obama and Clinton won re-election, but neither president faced the high degree of personal animus that Trump faces today.

Previously, the highest share of voters that said they disliked the president personally, regardless of their views on his policies, was 42% for George W. Bush in 2006 — in the wake of Hurricane Katrina.

49% of those polled said they’re "very uncomfortable" with Trump's 2020 candidacy. 41% said were "very uncomfortable" with Sen. Bernie Sanders, while 33% said the same for both Joe Biden and Sen. Elizabeth Warren.

At the same time, the poll shows that 26% of voters are "enthusiastic" about Trump's candidacy — compared to 17% for Warren, 13% for Sanders and 12% for Biden.

The bottom line: While the poll suggests a record level of personal hostility toward Trump, it also reflects a polarized electorate that also has doubts about the 3 Democratic frontrunners.

The NBC/WSJ poll of 900 voters was conducted Sept. 13-16. The margin of error for all adults is +/- 3.27 percentage points.

Go deeper: Enthusiasm for Elizabeth Warren surges in new 2020 poll