Only one House Republican who voted for a Jan. 6 inquiry has lost a primary so far.

When 35 Republicans defied Donald J. Trump to vote in favor of an independent, bipartisan investigation into the Jan. 6 attack on the Capitol, they immediately braced for backlash from the former president’s most loyal voters.

But it hasn’t quite hit as hard as expected — at least not yet.

Only one of the 35 has lost a primary challenge, while least 10 of the 13 incumbents in contested races had survived primary challenges as of Wednesday. (Nine of the 35 who voted for the panel opted to retire or have resigned.)

The fate of two incumbents whose races had elections on Tuesday still has not been determined, with Representative David Valadao of California expected to advance to the November election after appearing to finish second in Tuesday’s open primary and Representative Michael Guest of Mississippi being pushed into a June 28 runoff after narrowly trailing Michael Cassidy.

The lone casualty so far has been Representative David McKinley of West Virginia, who lost a May primary to Representative Alex Mooney, a Republican colleague who had been endorsed by Mr. Trump in the newly drawn Second District. Their districts were consolidated after West Virginia lost a seat in the House because of the state’s declining population.

There are plenty of high-profile opportunities for Mr. Trump in the months ahead to settle scores with Republicans who voted for the plan to form the independent commission, a proposal that ultimately died in the Senate. A House committee that is investigating the riot at the Capitol will hold a televised hearing in prime time on Thursday.

Here are some key races involving Republicans who voted for a commission:

• In Wyoming, Representative Liz Cheney was ousted last year from her House leadership post and punished by Republicans in her home state after voting to impeach Mr. Trump for his role in the Capitol attack. She will face Harriet Hageman, a Trump-endorsed challenger, in an Aug. 16 primary that is drawing national attention.

• In South Carolina, Representative Tom Rice is fighting for his survival in a seven-way primary that features Russell Fry, a state legislator who was endorsed by Mr. Trump. Mr. Rice also voted for impeachment and said he was willing to stake his political career on that position.

• In Michigan, where Mr. Trump’s attempts to domineer the Republican Party have encountered some notable setbacks, Representative Peter Meijer has drawn the wrath of the former president. Calling Mr. Meijer a “RINO” — a Republican in name only — Mr. Trump endorsed John Gibbs, the conservative challenger to Mr. Meijer in the Aug. 2 primary.

• As a result of redistricting in Illinois, Representative Rodney Davis is locked in a primary battle with Representative Mary Miller, a House colleague who has been endorsed by Mr. Trump. The primary is June 28. Ms. Miller was one of 175 Republicans who voted against the commission in the House, which is controlled by Democrats.

• In Florida, the pro-Trump America First political committee named Representative Carlos Gimenez as its “top target for removal from Congress.” Mr. Gimenez will face two challengers in the Aug. 23 primary, including Ruth Swanson, who has said that the 2020 election was “thrown” and has contributed campaign funds to Project Veritas, the conservative group.