Democratic candidates are ahead in seven key Senate races in the final New York Times/Siena polls before Tuesday's midterm elections, the Washington Examiner reports. The polls were taken from October 23 to November 1, the Siena Research Institute and Quartz say.

Siena's results show Democrats ahead by 11 points in Michigan, 7 in Texas, 6 in Maine and 5 in Kansas and Ohio. Mary Peltola leads Republican Sen. Dan Sullivan by 2 points in Alaska. In Iowa, Josh Turek leads Ashley Hinson 48% to 47%. "Iowa is virtually tied," said Don Levy, who runs the institute.

In Texas, James Talarico leads Ken Paxton 50% to 43%, Siena says. In the governor races, Democrats lead by 8 points or more in Alaska, Iowa, Maine and Michigan, while Kansas and Texas are too close to call, Levy said.

"With so many races within the poll's total margin of error, a Senate majority for either party remains possible," Levy said.

The Washington Examiner reports that voters who made up their minds late favor Republicans by 9 points. It says the polls reached 5,708 voters across the seven states. Quartz lists the sample in each state, from 610 voters in Alaska to 1,215 in Texas. The Examiner notes that the polling was mostly done before a late news report about the Alaska race. In Michigan, Democrat Haley Stevens endorsed Republican Mike Rogers on Sunday, the outlet reports.

What we know: Democrats lead in all seven races in the final polls, though several leads are small.
What we don't: How late deciders and turnout will shape the results on Tuesday.