DC voters head to the polls Tuesday without a particularly high-profile race on the ballot. Mayor Muriel Bowser faces little serious opposition in her primary contest, after 2014 primary challenger Vincent Gray declined to make another bid. Meanwhile, D.C.’s non-voting delegate to the U.S. House of Representatives, Eleanor Holmes Norton, faces a primary challenge from Democrat Kim Ford, though Norton – who has held her seat since 1991 – is expected to prevail.
Here's a look at the past and upcoming 2018 primary elections. Use the dropdown above to view results in states for which CNN has access to the election data.
GOP Rep. Mike Coffman will face an intense battle for a sixth term, as this district, which includes Denver suburbs, voted for Clinton in 2016. This diverse district with a growing Hispanic population has trended Democratic, which in part is why CNN ranks the race as a toss-up. The governor's race could affect down-ticket races, though the state as a whole has trended Democratic as well over the past few elections.
No congressional race is viewed as competitive in Maryland, but a pending Supreme Court case on gerrymandering districts in favor of Democrats could change the map here. Republican Gov. Larry Hogan is popular in the state, which could help him separate himself from the national party -- not viewed as favorably here -- to win a second term. Chelsea Manning, the former Army intelligence analyst convicted of disclosing classified information to WikiLeaks, is running for Senate as a Democrat.
Five GOP congressional races are ranked somewhat competitive by CNN. Reps. John Faso and Claudia Tenney have lagged behind in fundraising going into 2018, as CNN rates their seats as toss-ups. Democrats are hoping their national popularity will help them unseat Faso in his Hudson Valley district. Though Tenney represents the more conservative Binghamton area, Obama did well there, showing the power of a motivated Democratic Party they hope to capitalize on again. With a governor and Senate race (Kirsten Gillibrand's seat is ranked solid Democrat heading into her re-election bid), the Big Apple could be the home of big wins for Democrats.
Utah may not house the most competitive races of 2018, but the Beehive State will be buzzing. Former 2012 Presidential nominee Mitt Romney recently announced his run for the open Senate seat there, which is ranked as solid Republican by CNN. GOP Rep. Mia Love will face a tough race this fall and is currently lagging behind in fundraising. Her Salt Lake City district is a strong Republican area, as CNN ranks this race as lean Republican.
Tennessee's nine districts are not ranked as competitive, though the Senate seat left open by Republican Bob Corker's retirement, reconsideration and final decision to retire has sparked an interest on both sides of the aisle. It will be a tough race for Democrats, though popular former Gov. Phil Bredesen could give the GOP a run for its money, even though Trump won the state by 26 points. CNN ranks this race as lean Republican.
Special election for former GOP Rep. Pat Tiberi's seat. Tiberi resigned to join the Ohio Business Roundtable. CNN rates this Columbus-suburb district as lean Republican.
The Kansas side of Kansas City is a potential risk for Republicans. As GOP Rep. Kevin Yoder seeks a fifth term, he's weighed down by a district that narrowly voted for Clinton in 2016. Yoder's cash advantage gives him a good start, as CNN rates this race as lean Republican. Retiring GOP Rep. Lynn Jenkins' seat is also rated as lean Republican.
Four Michigan Republican-held seats are viewed as competitive by CNN, leading with retiring Rep. David Trott's Detroit-suburb district ranked as toss-up. Rep. Michael Bishop will seek a third term in his Lansing-based district, where Trump expanded the margin of the two past presidential winners, though he's been outraised by his Democratic opponent. CNN rates this race as lean Republican. A good night for Democrats in November could put GOP Reps. Fred Upton and Tim Walberg at risk, but for now, their races are ranked as likely Republican.
Democratic Sen. Claire McCaskill will most likely face the toughest race she's experienced as she seeks a third term. Coming off the heels of Trump's 19-point win, Republicans are intent on flipping this seat in the Show Me state to their side. Josh Hawley – Missouri's Republican Attorney General – is McCaskill's likely GOP opponent. Democratic strength nationwide helped McCaskill in 2006 and 2012, which makes her party's momentum heading into November a critical factor in this race.
GOP Rep. Dave Reichert's retirement gives Democrats a big opening in this district of Seattle suburbs where Clinton won in 2016. CNN rates this race as a toss-up. House Republican Caucus leader Cathy McMorris Rodgers has a significant money lead and history in the district, giving her a significant advantage over her Democratic rivals, but momentum on the left cannot be ignored in this east Washington district. CNN ranks this race as likely Republican. Democratic Sen. Maria Cantwell is up for re-election.
Democratic Sen. Mazie Hirono is up for re-election.
Democratic Sen. Chris Murphy is up for re-election.
Four congressional districts in Minnesota are ranked as toss-ups by CNN. Two Democratic-held seats by retiring Reps. Tim Walz and Rick Nolan are targets for Republicans, hoping to use Trump's wins as a springboard to victory. Democrats are heavily targeting two suburban Minneapolis Republicans – freshman Rep. Jason Lewis, and five-term Rep. Erik Paulsen. Democratic Sen. Tina Smith is running to serve the rest of former Sen. Al Franken's term. Democratic Sen. Amy Klobuchar is up for re-election. Both are heavy favorites to win.
Independent Sen. Bernie Sanders is up for re-election.
Paul Ryan's retirement has put his Janesville-based seat in play, where Democratic challenger Randy Bryce had already raised millions. CNN rates it as lean Republican. Democratic Sen. Tammy Baldwin will face a tough re-election in the Badger State, coming off Trump's historic 2016 win there. A Republican presidential candidate hadn't won the state in the 28 years prior. CNN currently rates this race as lean Democrat.
Republican Sen. John Barrasso is up for re-election.
If Democrats have any chance of taking back the Senate, they will have to win in Arizona. Republican Jeff Flake's retirement opened the seat up, and both sides are already campaigning hard for it. Trump's immigration policies and positions will most likely embolden supporters and detractors to come to the polls in the Grand Canyon State, which he won by only 4 points in 2016. The race is ranked as a toss-up by CNN. Rep. Kyrsten Sinema is the likely Democratic nominee. Republicans will choose between Rep. Martha McSally - whose district is now lean Democrat - former Sheriff Joe Arpaio and former state Sen. Kelli Ward.
Democrats could show some strength in Florida, where one Republican-held seat is already ranked as a toss-up by CNN. GOP Rep. Carlos Curbelo is in danger of losing his seat composing the southern tip of the state. GOP Rep. Ron DeSantis is running for governor, and fellow GOP Rep. Dennis Ross is retiring. CNN ranks these seats -- as well as that of Republican Brian Mast -- as likely Republican. Democrat Bill Nelson faces a tough re-election to the Senate against Republican Gov. Rick Scott, who announced his run in April and has deep pockets. CNN rates this as a toss-up, and it will likely be one of the most expensive Senate races of the cycle.
Democratic Sen. Elizabeth Warren is up for re-election.
Democratic Sen. Tom Carper is up for re-election.
Both of New Hampshire's congressional seats are viewed as competitive this year. Democratic Rep. Carol Shea-Porter's district has flipped between both parties multiple times over the past decade. This seat is currently ranked as a lean Democrat by CNN. Democrat Ann Kuster's race will most likely not be as as competitive, but both parties have the history and know-how to win in the Granite State. CNN currently ranks this race as likely Democrat.
Democratic Sen. Sheldon Whitehouse is up for re-election.
Democrats would like to take back the last Republican-held seat in Maine's 2nd District, but that could prove tougher than expected. The district's support of Trump (giving him an electoral vote in 2016) and Rep. Bruce Poliquin's strong cash advantage will be tough to beat in this northern Maine seat. CNN currently rates the race as lean Republican, though the governor's race could provide Democrats a place to flip a state executive seat from red to blue. Independent Sen. Angus King is up for re-election.
On Saturday, President Donald Trump endorsed Lt. Gov. Henry McMaster in South Carolina’s premier primary contest, the GOP gubernatorial primary, between McMaster and challenger Catherine Templeton. The pair are competing for the nomination to U.N. Ambassador Nikki Haley’s old office, with the winner of Tuesday’s primary likely to win the general election in a state Trump carried by nearly 14 points in 2016.
Rep. Mark Sanford, a former South Carolina governor, will also face a stiff primary challenge from state Rep. Katie Arrington for his 1st district U.S. House seat. Sanford, a vocal Trump critic in the past, has taken heat for his unabashed condemnations of various Trump controversies. And in the state’s 5th congressional district, embattled Democrat Archie Parnell – who narrowly lost a 2017 special election – remains on the ballot, despite recently admitting to domestic abuse in the 1970s, news which has rocked his campaign and likely spoiled a long-shot Dem pick-up opportunity if Parnell advances.
Incumbent Sen. Roger Wicker cruised to re-nomination in the Mississippi;’s GOP Senate primary, after avoiding a primary challenge from conservative firebrand State Sen. Chris McDaniel. McDaniel will instead be running in an open-party special election for Mississippi’s other U.S. Senate seat on Election Day, the result of GOP Sen. Thad Cochran’s resignation from his seat amid health issues in April. Democrats Howard Sherman and David Baria advanced to a run-off for the Democratic nomination in the race against Wicker. Meanwhile, in the 3rd district Republican primary, Michael Guest and Whit Hughes advanced to a run-off after neither candidate received 50% of the vote.
In Oregon, incumbent Democratic Gov. Kate Brown easily won re-nomination. She heads to a general election contest against Republican primary winner Knute Buehler, who defeated second-place finisher Sam Carpenter by over 15 points. Brown is favored to win reelection in the reliably blue state. Oregon’s lone Republican U.S. House incumbent, Rep. Greg Walden, also breezed through his primary, and he will face Jamie McLeod-Skinner, the winner of the 2nd district Democratic primary, in the general election.
- All times ET.
- Not all candidates are listed.
- CNN will broadcast a projected winner only after an extensive review of data from a number of sources.
- Results data may not always add up to 100 percent due to rounding.