Poll: Trump 42, Clinton 42, Johnson 8, Stein 4

The third-party candidates draw their strongest support from younger voters. Twenty-six percent of voters ages 18 to 29 say they plan to vote for Mr. Johnson, and another 10 percent back Ms. Stein. A little more than one in five political independents say they will vote for one of the third-party candidates.

Discontent with the major party candidates is widespread. Among those who say they intend to vote for Mr. Trump or Mrs. Clinton, slightly more than half express strong support. The rest say that they harbor reservations about their candidate, or that they are simply voting to thwart the other nominee…

Among white women, the candidates are virtually tied: 46 percent for Mrs. Clinton and 45 percent for Mr. Trump.

Mrs. Clinton’s support is notably strong among college graduates, particularly whites. She leads by 11 points among white likely voters with a college degree; if polling holds, she would be the first Democrat in 60 years to win among this group.