From Fox News:
It seems like there are two electorates in these midterms. The first is frustrated with President Donald Trump and ready to reject Republicans. It includes growing numbers of independent, rural and Hispanic voters who say they’ll vote for a Democrat.
That’s what the latest round of House polling shows, including a survey last week that had Democrats up 11 points on the generic ballot, and Fox’s most recent national poll. The second electorate is wavering on Republicans but won’t necessarily hand Democrats the Senate. These are the voters in the Midwest and a few other places. They say they prefer the Democrat or Republican in their states by a point or two at most.