| Macarthur, Thomas | U.S. House | NJ | Republican | 1 |
| Macaulay, Kody Craig | U.S. House | OK | Democratic | 1 |
| Macbagito, Charlotte | U.S. House | GA | Democratic | 1 |
| Macdonald, Laurie | U.S. House | PA | Democratic | 1 |
| Macek, Dennis Frank | U.S. Senate | NE | Republican | 1 |
| Macek, Dennis Frank | U.S. Senate | NE | Democratic | 1 |
| Mace, Nancy | U.S. Senate | SC | Republican | 1 |
| Mace, Nancy | U.S. House | SC | Republican | 3 |
| Macewen, Drew C | U.S. House | WA | Republican | 1 |
| Macey, Jeff | U.S. House | FL | Republican | 1 |
| Macglaflin, Robert James | U.S. House | TX | Republican | 1 |
| Macgovern, John | U.S. Senate | VT | Republican | 1 |
| Macguffie, Robert W | U.S. House | CT | Republican | 1 |
| Machat, Steven | U.S. House | FL | Democratic | 1 |
| Macie, Mara Heather | U.S. House | FL | Republican | 1 |
| Mackenzie, Mark S | U.S. House | NH | Democratic | 1 |
| Mackenzie, Ryan Edward | U.S. House | PA | Republican | 4 |
| Mackenzie, Stephen | U.S. House | IN | Republican | 1 |
| Mackey, Joseph | U.S. House | IN | Democratic | 1 |
| Mack, Kimberly | U.S. House | PA | Republican | 1 |
| Mackler, James | U.S. Senate | TN | Democratic | 1 |
| Mack, Lono Willy | U.S. House | HI | Republican | 1 |
| Macruari, Philip | U.S. House | NY | UN | 1 |
| Madden, Alice | U.S. Senate | CO | Democratic | 1 |
| Madden, Liam | U.S. House | VT | Independent | 1 |
| Maddux, David Jackson | U.S. House | TN | Republican | 1 |
| Madison Downs, John Harrison | U.S. House | VA | Republican | 1 |
| Madison, Jonathan | U.S. House | CA | Republican | 1 |
| Madrid, Michael | U.S. House | NY | Libertarian | 1 |
| Madrid, Napoleon Picasso Valentino | President | US | Independent | 2 |
| Madrid, Ricardo Rascon | U.S. House | TX | Democratic | 1 |
| Madrigal de Pancho Villa, Ray | President | US | Democratic | 2 |
| Madrigal, Raul Ali | U.S. House | CA | Democratic | 1 |
| Madson, Joshua | U.S. Senate | NY | Independent | 1 |
| Madueno, Virginia | U.S. House | CA | Democratic | 1 |
| Maes, Desi | U.S. House | TX | Republican | 1 |
| Maffei, Daniel Benjamin Mr. | U.S. House | NY | Democratic | 1 |
| Magaziner, Seth | U.S. House | RI | Democratic | 1 |
| Magee, Quincy | U.S. Senate | PA | W | 1 |
| Magee, Quincy Andrew | U.S. Senate | PA | Republican | 1 |
| Magiera, Chris | U.S. House | IN | Republican | 1 |
| Maginnis, Brendan | U.S. Senate | NC | Democratic | 1 |
| Maginnis, Brendan Kyran | U.S. House | NC | Democratic | 1 |
| Magner, Jeffrey Louis | President | US | NNE | 1 |
| Magsig, Nathan | U.S. House | CA | Republican | 1 |
| Mahaffy, Eric Steven | U.S. House | WA | Democratic | 1 |
| Mahant, Siddharth | U.S. House | IN | Republican | 1 |
| Mahendra, Sujeet Bobby Narendra | U.S. Senate | NV | Democratic | 1 |
| Maher, Michael A | U.S. House | CA | Republican | 2 |
| Maher, Patricia | U.S. House | NY | Democratic | 1 |
| Maher, Patricia M | U.S. House | NY | Democratic | 1 |
| Mahesh, Kamal Al | U.S. House | TX | Democratic | 1 |
| Mahmood, Asif Dr. | U.S. House | CA | Democratic | 1 |
| Mahmoud, Mahmoud | U.S. House | NJ | OTH | 2 |
| Mahoney, Sean | U.S. House | NH | Republican | 1 |
| Mahony, Josh | U.S. House | AR | Democratic | 1 |
| Mahony, Joshua Mr. | U.S. Senate | AR | Democratic | 1 |
| Maia-Cusick, Shirley | U.S. House | NJ | Republican | 1 |
| Maia-Cusick, Shirley | U.S. Senate | NJ | Republican | 1 |
| Maidment, Edward A. (Andy) | U.S. House | MO | Libertarian | 1 |
| Main, David Nathan | U.S. House | CA | Republican | 1 |
| Majewski, J R | U.S. House | OH | Republican | 1 |
| Majewski, Jr | U.S. House | OH | Republican | 1 |
| Majok, Chol-Awan A | U.S. House | NY | Democratic | 1 |
| Majors, Bruce | U.S. House | DC | Libertarian | 1 |
| Majors, Bruce Powell Mr. | U.S. House | DC | Libertarian | 1 |
| Major, Stephen Thomas Mr. | U.S. House | WA | Republican | 1 |
| Makki, Amanda | U.S. House | FL | Republican | 1 |
| Malamed, Zak | U.S. House | NY | Democratic | 1 |
| Malan, John | U.S. House | WA | OTH | 1 |
| Malan, John | U.S. House | WA | Democratic | 1 |
| Malarsie, Mary | U.S. House | CO | Independent | 1 |
| Malayter, Patrick Michael | U.S. House | IN | Republican | 1 |
| Maldonado, Joseph A | President | US | Libertarian | 1 |
| Maldonado, Justin Jun | U.S. House | NJ | Independent | 1 |
| Maldonado, Michelle Ann Elizabeth | U.S. House | VA | Democratic | 1 |
| Malek, Lucas Todd | U.S. House | ID | Republican | 1 |
| Malgeri, Noah | U.S. House | NV | Republican | 1 |
| Malgieri, Anthony | U.S. House | CO | NNE | 1 |
| Malik, Anita | U.S. House | AZ | Democratic | 1 |
| Malik, Rashid A | U.S. House | GA | Democratic | 1 |
| Malik, Silky | U.S. House | TX | Democratic | 1 |
| Malinowski, Tom | U.S. House | NJ | Democratic | 1 |
| Malkemus, Charleston | U.S. House | FL | NPA | 1 |
| Malliotakis, Nicole | U.S. House | NY | Republican | 2 |
| Mallory, Sherry T Ms | President | US | Democratic | 1 |
| Malloy, Anita | President | US | AIP | 1 |
| Malloy, Gerald | U.S. Senate | VT | Republican | 1 |
| Malloy, Jeffrey | U.S. House | CA | Democratic | 1 |
| Malone, Bopha | U.S. House | MA | Democratic | 1 |
| Maloney, Carolyn B. | U.S. House | NY | Democratic | 2 |
| Malone, Yehanna Joan M M | President | US | Republican | 1 |
| Maloney, Sean Patrick | U.S. House | NY | Democratic | 2 |
| Malouf, Daniel | U.S. Senate | IL | Libertarian | 1 |
| Maloy, Celeste | U.S. House | UT | Republican | 1 |
| Mammadov, Ramin | U.S. House | SC | Democratic | 1 |
| Mammadov, Ramin | U.S. House | NC | Democratic | 1 |
| Manalakos, Anthony Mr. | President | US | Democratic | 1 |
| Manchik, Joe | U.S. House | OH | Green | 1 |
| Manchin, Joe III | U.S. Senate | WV | Democratic | 1 |
| Mandelblatt, Lisa | U.S. House | NJ | Democratic | 1 |
| Mandel, Charles Scott Mr. | U.S. House | TX | Republican | 1 |
| Mandel, David | U.S. House | CA | Democratic | 1 |
| Mandel, Josh | U.S. Senate | OH | Republican | 1 |
| Mandel, Joshua A | U.S. House | OH | Republican | 1 |
| Manes, Harvey Dr. | U.S. House | NY | Republican | 1 |
| Manes, Matthew Leonard | U.S. House | WI | Democratic | 1 |
| Mangas Moniz, Rachel Olivia | U.S. House | CA | Democratic | 1 |
| Mangeris, Douglas | U.S. House | CO | Libertarian | 1 |
| Mangone, Kim | U.S. House | CA | Democratic | 1 |
| Manjarres, Javier | U.S. House | FL | Republican | 1 |
| Manley, Elijah | President | US | SOC | 1 |
| Manley, Patrick William Mr. | U.S. House | OH | Republican | 1 |
| Mann, Bethany Eileen | U.S. House | MO | Democratic | 1 |
| Mann, Christine Eady | U.S. House | TX | Democratic | 2 |
| Manning, Chelsea Elizabeth | U.S. Senate | MD | Democratic | 1 |
| Manning, Christopher | U.S. House | NM | Libertarian | 1 |
| Manning, Christopher | U.S. House | NM | Libertarian | 1 |
| Manning, Kathy | U.S. House | NC | Democratic | 1 |
| Manning, Paul | President | US | CIT | 1 |
| Manning, Robert Lee Jr | President | US | Independent | 1 |
| Manning, Thomas Clayton | U.S. House | TX | Republican | 1 |
| Manning, Zachariah C. | U.S. House | TX | Democratic | 1 |
| Manning, Zachariah C. | U.S. House | TX | Democratic | 1 |
| Mannion, John W | U.S. House | NY | Democratic | 2 |
| Mannix, Brian Matthew | U.S. House | NY | Independent | 1 |
| Manno, Roger | U.S. House | MD | Democratic | 1 |
| Mann, Rennie Hill | U.S. Senate | TX | Republican | 1 |
| Manns, Jeffrey D | U.S. House | PA | Republican | 1 |
| Mann, Tracey Robert | U.S. House | KS | Republican | 1 |
| Manolache, Gabriella | U.S. House | MI | Republican | 1 |
| Mansfield, Eric | U.S. Senate | NC | Democratic | 1 |
| Mansharamani, Vikram | U.S. Senate | NH | Republican | 1 |
| Mansharamani, Vikram | U.S. House | NH | Republican | 1 |
| Mantanona, Nicholas Brent | President | US | OTH | 1 |
| Mantanona, Nicholas Brent Mr | U.S. Senate | TN | OTH | 1 |
| Mantanona, Nicholas Brent Mr. | U.S. House | TN | Independent | 1 |
| Mantanona, Nicholas Mr | U.S. Senate | NY | Independent | 1 |
| Mantey, Dale S | U.S. House | TX | Democratic | 1 |
| Mantilla, Joanne Marie Cempron Ms. | U.S. House | PA | Democratic | 1 |
| Manuel, Mel Inari | U.S. House | LA | Democratic | 1 |
| Maples, Chris | U.S. House | NC | Republican | 1 |
| Mapp, Chris | U.S. House | TX | Republican | 1 |
| Mapstead, Lars Damian 8319014600 | President | US | Libertarian | 1 |
| Marcano, Carlos Cruz Jr | U.S. House | IN | Democratic | 1 |
| Marcellini, Mark Robert | President | US | — | 2 |
| Marchand, Steve | U.S. Senate | NH | Democratic | 1 |
| Marchant, Jim | U.S. House | NV | Republican | 2 |
| Marchant, Jim | U.S. Senate | NV | Republican | 1 |
| Marchant, Kenny E Mr. | U.S. House | TX | Republican | 1 |
| Marciniak, Jerimiah | President | US | NPA | 1 |
| Marcinkewciz, Tony I | U.S. House | MI | Republican | 1 |
| Marc, Jonathan | U.S. House | FL | Democratic | 1 |
| Marc, Jonathan | U.S. House | FL | Democratic | 1 |
| Marcotte, Kelly Lynn Ms | U.S. Senate | IL | Democratic | 1 |
| Marcy, Carrie Mae Miss | President | US | Republican | 1 |
| Marcy, Carrie Mae Miss | President | US | Republican | 2 |
| Margolies-Mezvinsky, Marjorie | U.S. House | PA | Democratic | 1 |
| Margolis, Baruch | President | US | N/A | 2 |
| Margolis, Baruch | President | US | NPA | 3 |
| Margus, Robert | U.S. House | PA | Libertarian | 1 |
| Marina, Kristin | President | US | Independent | 1 |
| Mariner, Jason | U.S. House | FL | Republican | 1 |
| Marin, Grady | U.S. House | OH | Democratic | 1 |
| Marino, Louis G | U.S. House | MA | Republican | 1 |
| Marino, Louis Gregory | U.S. House | MA | Republican | 1 |
| Marino, Louis Gregory | U.S. Senate | MA | Libertarian | 1 |
| Marino, Louis Gregory Mr | U.S. House | MA | Republican | 1 |
| Marino, Thomas Anthony | U.S. House | PA | Republican | 1 |
| Markel, Homer Chip Mr. | U.S. House | IL | Democratic | 1 |
| Markey, Edward J. Sen. | U.S. Senate | MA | Democratic | 1 |
| Markey, Michael Jay Mr. Jr. | U.S. House | MI | Republican | 1 |
| Markland, Montgomery | U.S. House | TX | GOP | 1 |
| Markland, Montgomery L | U.S. House | TX | Republican | 1 |
| Markland, Montgomery Lee | U.S. Senate | TX | Republican | 2 |
| Markland, Montgomery (Optional) | U.S. House | TX | Republican | 1 |
| Markos, Juan | U.S. House | CA | NPA | 1 |
| Marksberry, Warren Edward | U.S. Senate | KY | Democratic | 1 |
| Marks, Doug | U.S. Senate | AZ | Libertarian | 1 |
| Marks, Ellen L. | U.S. House | IN | Democratic | 1 |
| Marks, Martin J. | U.S. House | FL | Republican | 1 |
| Marks, Tavorise Keaunte | U.S. House | VA | Democratic | 1 |
| Mark-Viverito, Melissa | U.S. House | NY | Democratic | 1 |
| Marlar, Stan E Jr | U.S. House | TN | Republican | 1 |
| Marlinga, Carl | U.S. House | MI | Democratic | 1 |
| Maron, Maud | U.S. House | NY | Democratic | 1 |
| Maroof, Netanel | President | US | Independent | 1 |
| Marotta, Joseph | U.S. House | CA | Republican | 1 |
| Marquez Peterson, Lea | U.S. House | AZ | Republican | 1 |
| Marrero, Edgardo R Mr. | U.S. House | NY | Democratic | 1 |
| Marron, Deborah Ann | President | US | Republican | 1 |
| Marrs, Damon Foster | President | US | Republican | 1 |
| Marsella, Renee | U.S. House | FL | Republican | 1 |
| Marshall, Derek | U.S. House | CA | Democratic | 1 |
| Marshall, Erin | U.S. House | KY | Democratic | 1 |
| Marshall, Jennifer | U.S. House | NC | Democratic | 1 |
| Marshall, Kouri Mr. | U.S. House | IL | Democratic | 1 |
| Marshall, Robert | U.S. House | IL | Democratic | 1 |
| Marshall, Robert G | U.S. House | VA | Republican | 1 |
| Marshall, Robert G | U.S. Senate | VA | Republican | 1 |