Voters struggling with high prices and angry over the Iran war will decide Tuesday whether to drastically shift power in Washington in midterm elections that will serve as a referendum on President Donald Trump's second term.

Polls are opening across the country in an election that could determine whether Republicans keep their congressional advantage or if Democrats regain power in either chamber.

While outsiders are on the ballot elsewhere Tuesday, candidates for New Hampshire's open U.S. Senate seat are trying to tap into anti-establishment angst from the inside.

Alaska's bitterly fought U.S. Senate race took a tumultuous turn less than two weeks before Election Day, with allegations of partisan tricks to recruit a candidate with the same name as the Republican incumbent, investigations and an effort backed by President Donald Trump to delay certification if two-term Sen. Dan Sullivan loses.