While primary elections have now been held in many of the most hotly contested national races, voters in several states have yet to cast their ballots in key races that are expected to affect the composition of Congress in 2027 and beyond.
Some of these include battlegrounds such as Arizona, Wisconsin, Michigan, Alaska, and New Hampshire.
The list also has several Republican-leaning states—including Kansas, Missouri, Tennessee, and Florida—as well as several Democratic-favoring ones, including Washington, Minnesota, Wisconsin, and Massachusetts.
Here are the key primary races remaining.
In Arizona, voters will cast their ballots on July 21 for House and governor.
In the 1st Congressional District, both parties will be holding primaries. The Cook Political Report rates the races as toss-ups.
In the solidly Republican 5th Congressional District, Trump has endorsed former sheriff Mark Lamb, while the Democratic field includes combat veteran Brian Hualde, former Obama administration official Chris James, and nurse Elizabeth Lee.
The race for governor consists of four Republicans looking to take on Democratic Gov. Katie Hobbs. Trump has endorsed Rep. Andy Biggs over the other contenders—Rep. David Schweikert, businessman Ken Miceli, and entrepreneur Scott Neely.
The Cook Political Report rates the race as a toss-up.
In Kansas, the gubernatorial election is the most closely-watched, with Democratic Gov. Laura Kelly leaving office due to term limits.
The Cook Political Report rates the race as “lean Republican,” but Democrats hope to replicate Kelly’s success in the statewide race this year.
In Michigan, voters will cast ballots in the races for Senate, House, and governor on Aug. 4.
The race for Senate on the Democratic side includes Rep. Haley Stevens and doctor Abdul El-Sayed in a battle that is being cast as an establishment candidate versus a progressive. The winner will take on former Rep. Mike Rogers, the presumptive Republican nominee, in a race that’s been rated a toss-up.
In the 7th Congressional District, Democrats are looking to flip the seat currently held by Republican Rep. Tom Barrett in a contest rated as a toss-up.
In the 8th Congressional District, Republicans are vying to flip the seat held by incumbent Democratic Rep. Kristen McDonald Rivet in a race rated as leaning Democratic.
In the 10th Congressional District, both parties are holding primaries in the race to succeed GOP Rep. John James, who is running for governor, in a district rated as favorable to Republicans.
In the gubernatorial election, James is the Republican frontrunner, while Democrats’ leading candidate is Michigan Secretary of State Jocelyn Benson. The Cook Political Report rates the contest as “lean Democratic.”
In Missouri, national observers are watching the 1st Congressional District.
Incumbent Democratic Rep. Wesley Bell faces a rematch with former Rep. Cori Bush, whom he defeated in 2024, testing whether progressives can maintain the momentum they have seen in other races nationwide from New York to Colorado. Bell is a supporter of Israel, while Bush is critical of the Jewish state.
The winner is all but guaranteed to win the St. Louis-based seat, which the Cook Political Report rates as “solidly Democratic.”
In Washington, candidates from both parties are running in the solidly Republican 4th Congressional District election to succeed retiring Rep. Dan Newhouse.
In Tennessee, the gubernatorial race is in the spotlight.
Sen. Marsha Blackburn (R-Tenn.), Rep. John Rose (R-Tenn.), and state Rep. Monty Fritts are running for the GOP nomination in a race where Trump has made no endorsements.
The winner of the Republican primary is expected to win the general election.
In Minnesota, voters will cast their ballots in key elections for governor and Senate.
Sen. Amy Klobuchar is expected to win the state’s Democratic nomination and general election in the race to replace outgoing Gov. Tim Walz.
Republicans in the race include businessman Mike Lindell and Minnesota House of Representatives Speaker Lisa Demuth.
Meanwhile, 10 Republicans are competing in the Senate race to succeed Democratic Sen. Tina Smith. Trump has not endorsed in the race, but former Navy SEAL Adam Schwarze won the support of the Minnesota Republican Party.
The six Democrats running include Lt. Gov. Peggy Flanagan and Rep. Angie Craig.
One of the most closely-watched races of the 2026 cycle is Alaska’s senatorial election.
On Aug. 18, incumbent Sen. Dan Sullivan (R-Alaska) will face off against several opponents in the state’s open primary election. Under the system, the top two candidates will advance to the general election.
Former Rep. Mary Peltola (D-Alaska) is the Democratic presumptive choice to take on Sullivan, having opted to pursue the seat in lieu of a run for governor.
Because Peltola has shown viability in statewide elections in the single-district state, the Last Frontier is a top target for Democrats this year.
In the only poll taken of the race, Peltola leads with 46 percent to Sullivan’s 41 percent.
—Joseph Lord and Jackson Richman
BOOKMARKS
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Argentina made a comeback to beat Egypt 3–2 on Tuesday, knocking them out of the World Cup. On the brink of defeat, the South Americans managed to score three goals after being down 2-0 until the last 10 minutes of the game.
United and Delta Airlines will face class action lawsuits over “windowless” window seats, after a federal judge ruled against United’s motion to dismiss on July 7. The terms of sale “expressly agreed to provide a seat with a window to passengers who paid for one,” U.S. District Court Judge James Donato said.
A federal judge has tossed out a Justice Department subpoena that asked for the names of 2020 Fulton County, Georgia election workers. “Given the low need for the subpoenaed information and the highly burdensome nature of the disclosure of the same, the subpoena is unreasonable and must be quashed,” U.S. District Judge William Ray said.
The International Olympic Committee has reinstated Russia, clearing the way for the country’s athletes to return to competition. Find out more by reading Jackson Richman’s latest.
—Stacy Robinson
