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Gallup's editors review six factors that help explain Tuesday's midterm results, ranging from President Trump's impact to the economy and voter engagement.
Despite the partisan rancor surrounding the midterm campaign, majorities agree on several things the government can do regardless of who wins on Nov. 6.
Given a choice, Americans are significantly more likely to want political leaders in Washington to compromise rather than stick to principles.
Competing factors for the midterms are presidential approval, which would imply GOP losses, and economic sentiment, which would suggest GOP gains.
The late U.S. Sen. John McCain was one of the most popular American politicians in the past 20 years.