Secretary of Homeland Security · U.S. Senator for Oklahoma until March 23, 2026

Markwayne Mullin

723 recorded votes of the 119th Congress.

Left the Senate on March 23, 2026. The record below is complete through that date. The Senate confirmed them as Secretary of Homeland Security on March 23, 2026, 54 to 45, and they are on the administration page.

723 recorded votes

Voted for51871.6%
Voted against16522.8%
Did not vote405.5%

94.5%

of the votes they could cast

statements indexed

Turned up for 94.5% of the votes they could have cast, below the middle of the Senate, which is 97.9%.

In plain English

Mullin voted 94 times out of every 100 they could. That is less than the middle of the Senate, which is 98.

They vote the same way as Pete Ricketts more than anyone else. The two agreed 100 times out of 100.

Across the aisle they line up most with John Fetterman. They agreed 26 times out of 100.

Counted from the record

What Their Votes Add Up To

The Senate takes 54 votes of this kind this Congress against the House's 391: its floor time goes to cloture motions and nominations, where a yes does not mean pass the thing. There is not enough here to set out.

Voting With Their Party

On the 842 votes this Congress where a majority of Democrats took one side and a majority of Republicans took the other, Markwayne Mullin voted on 636 and was with the Republican majority on 631 of them.

636 party line votes cast

With their party63199.2%
Against their party50.8%

Votes Against Their Own Party

January 30, 2026S.Amdt. 4236Voted Yea · On the Motion to Table
January 30, 2026S.Amdt. 4272Voted Nay · On the Amendment
September 29, 2025S. 2806Voted Nay · On Cloture on the Motion to Proceed
September 16, 2025S.Con.Res. 22Voted Nay · On the Motion to Proceed
March 14, 2025S.Amdt. 1266Voted Nay · On the Amendment

Who They Vote With

In Their Own Party

Of the votes both took part in.

Pete RickettsRepublican · NE · agreed on 99.7% of 681 shared votes
John BoozmanRepublican · AR · agreed on 99.7% of 676 shared votes
Mike RoundsRepublican · SD · agreed on 99.6% of 679 shared votes
Deb FischerRepublican · NE · agreed on 99.6% of 675 shared votes
Cindy Hyde-SmithRepublican · MS · agreed on 99.6% of 673 shared votes

Voting Across the Aisle

John FettermanDemocrat · PA · agreed on 25.9% of 637 shared votes
Jeanne ShaheenDemocrat · NH · agreed on 22.5% of 657 shared votes
Margaret Wood HassanDemocrat · NH · agreed on 21.8% of 670 shared votes
Jacky RosenDemocrat · NV · agreed on 19.0% of 672 shared votes
Mark R. WarnerDemocrat · VA · agreed on 17.8% of 667 shared votes

The record itself

Where the Words Are

The Congressional Record's own speaker tagging does not mark this member as speaking in any item of business this Congress. That tagging is not complete, so it does not mean they have not spoken.

Every Recorded Vote

All 723 recorded votes of the 119th Congress in which the Senate lists Markwayne Mullin. The most recent 4 below, each linking to the official record of that vote.

March 23, 2026PN786-9Did not vote (Not Voting) · On the Cloture Motion
March 23, 2026PN858Voted for (Yea) · On the Nomination
March 22, 2026PN858Voted for (Yea) · On the Cloture Motion
March 21, 2026S. 1383Voted against (Nay) · On the Cloture Motion

All 723 recorded votes, newest first →

Elsewhere in the Record

Everyone who represents Oklahoma Both chambers, with a link to each member's page.
Find your representatives Every member of the 119th Congress, by state.

The other Oklahoma senators in this Congress: James Lankford and Alan Armstrong.

How these records are gathered, and what they leave out, is set out on the Promise Tracker.