Heitkamp, a former state attorney general, is popular in North Dakota.
Another Tuesday, another wave of primaries.
On election night, be sure to check in here to find results.
The Democratic candidates have a challenge getting voters to remember their names.
Rep. Mark Sanford, R-S.C. - a former SC governor who has never lost a bid for political office - is sweating Tuesday's primary against a newcomer who has portrayed him as a disloyal Never-Trumper, Politico reported.
Candidates running in the Democratic primary for the Virginia 10th Congressional District seat participate in a candidates forum, February 17, 2018, at James Wood Middle School in Winchester, Va. Republicans say she's trying to hide her extreme views. Scott Hammond and former reporter Michelle Mortensen. Ryan McAdams; incumbent is Rep. Donald McEachin (D).
It is a different story in western counties, where voters must choose between a Republican and Democratic ballot.
LAS VEGAS-While Nevada's political colors have been shifting from red to blue for two decades now, complete control of the Silver State has eluded Democrats so far.
Clark County Commissioner Chris Giunchigliani speaks during a commission meeting on Tuesday, April 17, 2018, in Las Vegas.
Virginia features four House races that are expected to be competitive in November's general election.
Before casting a ballot, Virginia voters in the primary election must declare whether they want a Republican or Democratic ballot.
A statewide primary will decide the Republican nominee for the U.S. Senate.
As recently as the 1990s, Democrats and Republicans were fairly even divided in Nevada, a state that had supported Republican presidents including Ronald Reagan, George H.W. Bush and his son, George W. Bush.
This week's principal focus is on Virginia, a state trending increasingly blue where Republicans hold a number of vulnerable House seats.
Democrats are also waging closely watched contests in Hampton Roads and central Virginia.
"I have the lived experience to be competitive in every inch of this district".
With both party primaries set for Tuesday, strong Democratic candidates are expected to emerge to challenge almost every major statewide office now held by Nevada Republicans, offering Democrats their best shot in years to seize political control over the state.
Five of these eight states-Pennsylvania, Florida, Minnesota, Ohio, and Michigan-were battleground states in 2016 (though Democrats and the mainstream media did not realize Minnesota was a battleground state until election day, when Hillary Clinton squeaked to a narrow victory there).
The six-way primary in Northern Virginia's 10th District - a suburban swing district represented by Rep. Barbara Comstock (R) - is the marquee race on the Democratic ballot, followed by a hot contest outside Richmond for the Democratic nomination to challenge Rep. Dave Brat (R).
Arrington is accusing Sanford of seeking the spotlight and impeding Trump's agenda.