Americans are divided on the question of whether scientists agree that the earth is warming because of human activity.

A majority of Republicans now say there is no solid evidence the earth is warming; three years ago, 62% saw solid evidence.

Hispanics are divided about the impact of illegal immigration on Hispanics already living in the U.S.

Among all registered voters, preferences are about evenly divided — 44% Democratic, 43% Republican. But among likely voters, Republicans lead by 6 points (48% to 42%) — one of the largest gaps in preferences between all voters and likely voters ever recorded in Pew Research Center surveys.

Far more Republicans than Democrats say they are more enthusiastic than usual about voting in this year’s congressional election.