Heller, 58, who holds the most vulnerable of the nine GOP-held seats on the ballot in 2018, won a reprieve from a contested GOP primary when Trump successfully urged announced rival Republican Danny Tarkanian to drop out of the Senate race and run for a House seat instead.
Fifty-one of the 99 competitive races are in those eight states-California (10), Pennsylvania (9), Florida (7), OH (5), Minnesota (5), New Jersey (5), NY (5), and MI (5).
Voters then choose which candidate from that specific party they want to represent that party in November's general election.
Of those Democrats, only one has held elected office before: State Sen.
Unlike the General Election in November, where the victor represents their district in the Virginia General Assembly or U.S. Congress, the victor of Tuesday's primary election only becomes their party's representative in the upcoming general election.
This is the first in a series of articles on the 2018 mid term elections in the 99 competitive races in the House of Representatives.
On Tuesday, June 12, voters in Virginia will head to the polls.
Democrats are hoping that the congresswoman's stated support for the president's policies will backfire on her in November. Rep. Barbara Comstock (R-VA-10)-assuming she withstands her own primary challenge on Tuesday from Shak Hill.
Democrats will decide between Elaine Luria and Karen Mallard.
In the second district, which includes the Hampton Roads area, both Democrats running to challenge incumbent Republican Representative Scott Taylor are women.
Democrats have already nominated Leslie Cockburn at a party convention in the fifth district, which leans Republican but is losing incumbent GOP Representative Tom Garrett, who cited a drinking problem in his decision not to run again.
That's because Democrats Abigail Spanberger and Dan Ward are facing off in the 7th U.S. House District race. It lets voters rank candidates by preference rather than choosing just one.
On a recent day Democratic gubernatorial candidate Ms. Giunchigliani donned sneakers and a sun hat to knock on doors in one lower-income neighborhood to persuade voters to choose her to run against Mr. Laxalt. Gov. Sandoval, who is leaving after serving a maximum two terms, cruised to re-election in 2014 after no high-profile Democrats emerged to oppose him. State Attorney General Janet Mills, who like Giunchigliani has the backing of Emily's List, started the race as the front-runner but has faced tough competition from the large field.
Comstock's suburban House district outside Washington, home to many federal government workers, was carried by Democrat Hillary Clinton over Republican Donald Trump by 10 percentage points in the 2016 presidential election.