Polls point to Democratic takeover of the House, but here's what could change that

WASHINGTON - With the final polls finished, the last ads cut and well over 35 million people already having voted, political operatives in both parties expect Democrats to win back control of the House on Tuesday and make significant gains in state capitals even as Republicans keep narrow control of the Senate.

But as President Donald Trump's victory in 2016 showed, upsets do happen. And in this election, several factors exist that could change the expected results - in either direction.

Among the big question marks:

How badly will Democrats lose among blue-collar white voters, the group that forms the base of Trump's support?

What will turnout look like among Latinos, who are key to Democratic hopes to win Senate seats in Arizona, Nevada and several House seats in California and elsewhere in the Southwest?

"The question is have we engaged the Latino community enough to generate turnout?" said Democratic pollster Mark Mellman. "It's going