William Walter Mercer
Appointed by President Donald J. Trump in 2025 and confirmed by the Senate 52–45, William Walter Mercer is a Judge on the U.S. District Court for the District of Montana. He earned a law degree from George Mason University School of Law (now Antonin Scalia Law School) in 1993. Sources ↓
- Born
- 1964 · age 62
- Appointed by
- Donald J. Trump, 2025
- Confirmed
- 52–45
- Education
- University of Montana 1986 · George Mason Law (now Antonin Scalia Law School) 1993
- Succeeded
- Dana Lewis Christensen
Federal judicial service
| Year | Court | Appointed by | Vote |
|---|---|---|---|
| 2025 | District of Montana succeeded Dana Lewis Christensen | Trump (R) | 52–45 |
Party letters show the appointing president’s party, not the judge’s own.
Confirmation vote
Nomination Confirmed 52–45 on October 22, 2025 · 119th Congress, Roll Call 584. Each senator links to their judicial-voting record.
Voted to confirm · 52
52 R
- Jim Banks(R-IN)
- John Barrasso(R-WY)
- Marsha Blackburn(R-TN)
- John Boozman(R-AR)
- Katie Britt(R-AL)
- Ted Budd(R-NC)
- Shelley Capito(R-WV)
- Bill Cassidy(R-LA)
- Susan Collins(R-ME)
- John Cornyn(R-TX)
- Tom Cotton(R-AR)
- Kevin Cramer(R-ND)
- Mike Crapo(R-ID)
- Ted Cruz(R-TX)
- John Curtis(R-UT)
- Steve Daines(R-MT)
- Joni Ernst(R-IA)
- Deb Fischer(R-NE)
- Lindsey Graham(R-SC)
- Chuck Grassley(R-IA)
- Bill Hagerty(R-TN)
- Josh Hawley(R-MO)
- John Hoeven(R-ND)
- Jon Husted(R-OH)
- Cindy Hyde-Smith(R-MS)
- Ron Johnson(R-WI)
- James Justice(R-WV)
- John Kennedy(R-LA)
- James Lankford(R-OK)
- Mike Lee(R-UT)
- Cynthia Lummis(R-WY)
- Roger Marshall(R-KS)
- Mitch McConnell(R-KY)
- David McCormick(R-PA)
- Ashley Moody(R-FL)
- Jerry Moran(R-KS)
- Bernie Moreno(R-OH)
- Markwayne Mullin(R-OK)
- Rand Paul(R-KY)
- Pete Ricketts(R-NE)
- James Risch(R-ID)
- Mike Rounds(R-SD)
- Eric Schmitt(R-MO)
- Rick Scott(R-FL)
- Tim Scott(R-SC)
- Tim Sheehy(R-MT)
- Dan Sullivan(R-AK)
- John Thune(R-SD)
- Thomas Tillis(R-NC)
- Tommy Tuberville(R-AL)
- Roger Wicker(R-MS)
- Todd Young(R-IN)
Voted against · 45
43 D, 2 I
- Angela Alsobrooks(D-MD)
- Tammy Baldwin(D-WI)
- Michael Bennet(D-CO)
- Richard Blumenthal(D-CT)
- Lisa Blunt Rochester(D-DE)
- Cory Booker(D-NJ)
- Maria Cantwell(D-WA)
- Christopher Coons(D-DE)
- Catherine Cortez Masto(D-NV)
- Tammy Duckworth(D-IL)
- Richard Durbin(D-IL)
- John Fetterman(D-PA)
- Ruben Gallego(D-AZ)
- Kirsten Gillibrand(D-NY)
- Maggie Hassan(D-NH)
- John Hickenlooper(D-CO)
- Mazie Hirono(D-HI)
- Timothy Kaine(D-VA)
- Mark Kelly(D-AZ)
- Andy Kim(D-NJ)
- Angus King(I-ME)
- Amy Klobuchar(D-MN)
- Ben Lujan(D-NM)
- Edward Markey(D-MA)
- Jeff Merkley(D-OR)
- Christopher Murphy(D-CT)
- Patty Murray(D-WA)
- Jon Ossoff(D-GA)
- Alex Padilla(D-CA)
- Gary Peters(D-MI)
- Jack Reed(D-RI)
- Jacky Rosen(D-NV)
- Bernie Sanders(I-VT)
- Brian Schatz(D-HI)
- Adam Schiff(D-CA)
- Charles Schumer(D-NY)
- Jeanne Shaheen(D-NH)
- Elissa Slotkin(D-MI)
- Tina Smith(D-MN)
- Mark Warner(D-VA)
- Raphael Warnock(D-GA)
- Elizabeth Warren(D-MA)
- Peter Welch(D-VT)
- Sheldon Whitehouse(D-RI)
- Ron Wyden(D-OR)
Did not vote · 3
2 D, 1 R
- Martin Heinrich(D-NM)
- Lisa Murkowski(R-AK)
- Chris Van Hollen(D-MD)
Education
| University of Montana | B.A. | 1986 |
| Harvard University | M.P.A. | 1988 |
| George Mason University School of Law (now Antonin Scalia Law School) | J.D. | 1993 |
Questions & answers
- Who appointed William Walter Mercer?
- President Donald J. Trump appointed William Walter Mercer to the U.S. District Court for the District of Montana in 2025.
- Was William Walter Mercer appointed by a Democrat or a Republican?
- William Walter Mercer was appointed by President Donald J. Trump, a Republican. JudicialFinder records the appointing president's party, not a judge's own politics.
- What was William Walter Mercer's confirmation vote?
- The Senate confirmed William Walter Mercer 52–45 on October 22, 2025.
- Which court is William Walter Mercer on?
- William Walter Mercer is a Judge on the U.S. District Court for the District of Montana.
Sources
Each fact on this page traces to a primary public record.
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Appointed in 2025. Data as of 2026-08-10. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).