Poll: Clinton maintains big lead as voters doubt Trump's temperament

Hillary Clinton leads Donald Trump by 9 points — 50 percent to 41 percent — in the latest NBC NewsSurveyMonkey Weekly Election Tracking Poll.

The numbers were virtually unchanged since last week's poll. Generally low favorability and negative attitudes among voters plague both candidates, however, as they make appeals to voters in key swing states in the weeks ahead.

A majority of voters continue to hold unfavorable impressions of both current nominees; Clinton's negative feelings were held by slightly less voters (59 percent) than Trump (64 percent). These results are according to the latest from the NBC NewsSurveyMonkey Weekly Election Tracking Poll conducted online from August 8 through August 14, 2016 among registered voters.

Click through images from a recent Trump policy speech:

Clinton continues her lead over the field in a four-way general election match-up with 43 percent against Trump (37 percent), Libertarian Gary Johnson (11 percent) and Green party candidate Jill Stein (4 percent).

Though Clinton's lead over Trump remains significant following the convention, a closer look at voter attitudes reveals that many still harbor negative feelings about both candidates. When asked to select all the qualities that describe each candidate including options for honesty, values and temperament, majorities of voters chose "none of the above" to describe both candidates.

Clinton's high point, however, is her perceived leadership strengths and ability to serve the country's interests well. Her campaign has consistently emphasized her leadership qualities and worked to draw a stark contrast between her and Trump on issues of national security. Her campaign's efforts may be working well as more than four in 10 voters said she has the personality and temperament to serve effectively as president. This includes 78 percent of Democrats and Democratic-leaners and 25 percent of Independents who don't lean toward any party.

Trump scores much lower. Just 17 percent of all voters say that Trump has the personality and temperament to serve effectively as president. Even among Republican and Republican-leaners, only 36 percent said Trump has the personality to serve effectively.