Clinton and Trump in virtual dead heat before first debate

In this poll:

Click "detailed view" to see interactive results by political and demographic groups (i.e. by party identification, gender, race/ethnicity and other groups). All results are based on the overall adult sample unless a subgroup is specified.

Poll Questions

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Q: I'd like you to rate the chances that you will vote in the presidential election in November: Are you absolutely certain to vote, will you probably vote, are the chances 50-50, or less than that?

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Q: (AMONG LIKELY VOTERS) If the only candidates were (Hillary Clinton and Tim Kaine, the Democrats) and (Donald Trump and Mike Pence, the Republicans), for whom would you vote? (Initial Clinton/Trump supporters included in results)

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Q: Do you approve or disapprove of the way Barack Obama is handling his job as president?

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Q: How do you feel about the possibility of a major terrorist attack in the United States - very worried, somewhat worried, not too worried or not worried at all?

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