| Mixon, Luke | U.S. Senate | LA | Democratic | 1 |
| Mixon, Matthew | U.S. House | MA | NPA | 2 |
| Mizeur, Heather Renay | U.S. House | MD | Democratic | 1 |
| Mlton, Jaime | U.S. House | IL | Republican | 1 |
| Moates, Michael | U.S. House | TX | Libertarian | 1 |
| Mobeen, Noor Dr. | U.S. House | TX | Democratic | 1 |
| Mockerman, Christopher William | U.S. House | DE | Independent | 1 |
| Mockus, Damien | U.S. House | TX | Republican | 1 |
| Modica, Julien | U.S. House | VA | Democratic | 1 |
| Mody, Roshan | U.S. House | FL | Democratic | 1 |
| Moghul, Fasil | U.S. House | MN | Democratic | 2 |
| Mohammad, Imtiaz Ahmad | U.S. House | FL | Democratic | 1 |
| Mohammad, Neill Dr. | U.S. House | IL | Democratic | 1 |
| Mohan, Radhakrishna | U.S. House | NY | Democratic | 1 |
| Mohan, Rajesh | U.S. House | NJ | Republican | 2 |
| Moher, William | U.S. House | VA | Republican | 1 |
| Mohr, Elmer S | President | US | NP | 1 |
| Mohsini, Zainab | U.S. House | VA | Democratic | 1 |
| Moilanen, Daniel Burton | U.S. House | MI | Democratic | 1 |
| Molaison, John Anthony | President | US | Republican | 1 |
| Moldafsky, Robert Ion | President | US | Democratic | 1 |
| Mole, Brad | U.S. House | SC | Republican | 1 |
| Molesevich, Mike | U.S. House | PA | Democratic | 1 |
| Molina, Raymond | U.S. House | FL | Republican | 1 |
| Molinaro, Marcus J. | U.S. House | NY | Republican | 2 |
| Molina, Victor Ruben Ymca | President | US | FRE | 1 |
| Monahan, Steven Edward | U.S. House | CO | Republican | 1 |
| Moncada, Richard Charles | President | US | Independent | 1 |
| Moncada, Richard Charles | President | US | Independent | 1 |
| Moncada, Richard Charles | President | US | Independent | 1 |
| Monday, Christopher Brian | U.S. House | TN | UN | 1 |
| Monds, John | President | US | Libertarian | 1 |
| Monetti, Raffaele Antonio | U.S. Senate | MO | Republican | 1 |
| Money, Christopher | U.S. House | NC | Republican | 1 |
| Monhollen, Brandon | U.S. House | KY | Republican | 1 |
| Monroe, Dustin Arron Mr | President | US | Republican | 1 |
| Monroe, Kate M | U.S. House | CA | Republican | 1 |
| Montague, Sheila | U.S. House | NJ | Democratic | 1 |
| Montague, Willie | U.S. House | FL | Republican | 1 |
| Montalvo, Angel | U.S. House | FL | Democratic | 1 |
| Montalvo, Kenneth James | President | US | Independent | 1 |
| Montanez Berrios (Dmb), Deliris | U.S. House | TX | Democratic | 1 |
| Montavon, Matthew | U.S. House | FL | Democratic | 1 |
| Monteforte, Michael A. Jr | U.S. House | VA | Republican | 1 |
| Montero, Maria | U.S. House | PA | Republican | 1 |
| Montgomery, Chalis Pomeroy | U.S. House | GA | Democratic | 1 |
| Montgomery, Derwin Lamar | U.S. House | NC | Democratic | 1 |
| Montgomery, Richard Thomas Mr. | President | US | W | 1 |
| Montiel, Carmen | U.S. House | TX | Republican | 1 |
| Montoya, Harry B | U.S. House | NM | Republican | 1 |
| Montoya, Laura | U.S. House | NM | Democratic | 1 |
| Montoya, Rick | U.S. Senate | NM | Republican | 1 |
| Montoya, Samuel | U.S. House | TX | Republican | 1 |
| Montseny, Teresa Ms. | U.S. House | MO | Democratic | 1 |
| Moolenaar, John Mr. | U.S. House | MI | Republican | 1 |
| Moon, Clifford E | U.S. House | WA | Republican | 1 |
| Moon, C Michael | U.S. House | MO | Republican | 1 |
| Mooney, Alexander X | U.S. Senate | WV | Republican | 1 |
| Mooney, Alexander Xavier | U.S. House | WV | Republican | 3 |
| Mooney, Arnold | U.S. Senate | AL | Republican | 1 |
| Mooneyham, Patricia G Miss | U.S. Senate | NJ | UN | 1 |
| Moon, Mike | U.S. House | MO | Republican | 1 |
| Moon, Richard | U.S. House | NY | Republican | 1 |
| Moon, Rulon Kent | U.S. House | UT | Democratic | 1 |
| Moore, Blake | U.S. House | UT | Republican | 1 |
| Moore, Brandy | President | US | NPA | 1 |
| Moore, Brian Patrick | President | US | Democratic | 1 |
| Moore, Dwayne H. | U.S. House | NY | Republican | 1 |
| Moore, Dwight Clint | U.S. House | TX | Republican | 1 |
| Moore, Edward Francis Jr | U.S. House | NY | Republican | 1 |
| Moore, Felix Barry | U.S. House | AL | Republican | 2 |
| Moore for Az, John W | U.S. House | AZ | Republican | 1 |
| Moore, Gregory John Dr. | U.S. Senate | CO | Republican | 1 |
| Moore, Gwen S | U.S. House | WI | Democratic | 1 |
| Moore, Jamie | President | US | Independent | 1 |
| Moore, Jeff | U.S. House | NC | Republican | 1 |
| Moore, John William | U.S. House | AZ | Republican | 1 |
| Moore, Justin | U.S. House | TX | Democratic | 1 |
| Moore, Kellie Ann Ms | U.S. House | IN | Democratic | 1 |
| Moore, Michael B | U.S. House | SC | Democratic | 1 |
| Moore, Nyanza Davis | U.S. House | TX | Democratic | 1 |
| Moore, R. Dennis | President | US | Democratic | 1 |
| Moore, Riley | U.S. House | WV | Republican | 1 |
| Moore, Rodney R. | U.S. House | GA | Republican | 1 |
| Moore, Roy Stewart | U.S. Senate | AL | Republican | 1 |
| Moore, Scotty | U.S. House | FL | Republican | 1 |
| Moore, Sidney | U.S. House | SC | Democratic | 1 |
| Moores, Mark | U.S. House | NM | Republican | 1 |
| Moore, Tim | U.S. House | NC | Republican | 1 |
| Mopper, Juius B | U.S. House | CO | Democratic | 1 |
| Moquin, Cameron | U.S. House | RI | Democratic | 1 |
| Morales, Adianis | U.S. House | FL | Republican | 1 |
| Morales, Daniel Romero Jr | U.S. House | AZ | Republican | 1 |
| Morales, Eduardo | U.S. House | OR | Democratic | 1 |
| Morales, Hector Adrian Mr. | U.S. House | TX | Democratic | 1 |
| Morales, Jesus Andy | U.S. House | CA | Democratic | 1 |
| Morales, Robert | U.S. House | NC | Republican | 1 |
| Moran, Cory | U.S. House | MT | Republican | 1 |
| Moran, James P. Jr. | U.S. House | VA | Democratic | 1 |
| Moran, Jerry | U.S. Senate | KS | Republican | 1 |
| Moran, John Paul | U.S. House | MA | Republican | 1 |
| Moran, Joshua | U.S. House | TN | Democratic | 1 |
| Moran, Nathaniel Quentin | U.S. House | TX | Republican | 1 |
| Morchak, Chris | President | US | W | 1 |
| Morckel, Richard | U.S. House | OH | Republican | 2 |
| Moreira, Elizabeth | U.S. House | CA | Democratic | 1 |
| Morel, Emmanuel G | U.S. House | FL | Democratic | 2 |
| Morel, Jessica | U.S. House | NC | Republican | 1 |
| Morelle, Joseph D | U.S. House | NY | Democratic | 1 |
| Moreno, Bernie | U.S. Senate | OH | Republican | 3 |
| Moreno-Casanova, Luz Awilda | U.S. House | NY | Democratic | 1 |
| Moreno, Dominick | U.S. House | CO | Democratic | 1 |
| Moreno, Elvira | U.S. House | CA | Republican | 1 |
| Moreno, Helena | U.S. House | LA | UNK | 1 |
| Moreno, Laura | U.S. Senate | OK | Republican | 1 |
| Moreno, Tony | U.S. House | CA | Republican | 1 |
| Morgan, Adam | U.S. House | AZ | Republican | 1 |
| Morgan, Adam | U.S. House | SC | Republican | 1 |
| Morgan, Carter | U.S. House | FL | Republican | 1 |
| Morgan, Clint A | U.S. House | TX | Republican | 1 |
| Morgan, Clinton Wesley | U.S. Senate | KY | Republican | 1 |
| Morgan, Delinda | U.S. House | OR | Republican | 1 |
| Morgan, Jan | U.S. Senate | AR | Republican | 1 |
| Morgan, Joseph David | U.S. House | AZ | Republican | 1 |
| Morgan, Kacey | U.S. Senate | TN | Independent | 1 |
| Morgan, Kenneth Farrell Mr. Sr | U.S. House | TN | Republican | 1 |
| Morgan, Kenneth F. III | U.S. House | OH | Republican | 1 |
| Morgan, Matthew Wade | U.S. House | MI | Democratic | 1 |
| Morgan, Patricia L | U.S. Senate | RI | Republican | 2 |
| Morgan, Yuripzy | U.S. House | MD | Republican | 1 |
| Morgenstern, Michael S. | U.S. House | OH | Republican | 1 |
| Morgenthau, Sarah | U.S. House | RI | Democratic | 1 |
| Morisson, Samuel Joseph Denis Colm | President | US | Independent | 2 |
| Morman, Quinci | President | US | Republican | 1 |
| Morott, Joshua | U.S. House | LA | Republican | 1 |
| Morrell, Kent | U.S. Senate | TN | Republican | 1 |
| Morrisey, Patrick Mr | U.S. Senate | WV | Republican | 6 |
| Morris, Genevieve | U.S. House | MD | Republican | 1 |
| Morris, Matthew Michael Hathaway | U.S. House | DE | Republican | 1 |
| Morrison, Kelly Louise | U.S. House | MN | DFL | 1 |
| Morrison, Terrance | U.S. House | MI | Democratic | 1 |
| Morris-Perry, Christopher | U.S. House | NY | CRV | 1 |
| Morris, Rickey D Mr Jr | President | US | Libertarian | 1 |
| Morris, Robert Bruce | U.S. House | NV | NON | 1 |
| Morrissey, Joseph Dee | U.S. House | VA | Democratic | 1 |
| Morris, Spence Edmund III | U.S. House | IL | Democratic | 1 |
| Morris, Spencer Allen | U.S. House | SC | Republican | 1 |
| Morrow, John F. | U.S. House | IL | Democratic | 1 |
| Morrow, Scott D Mr | U.S. Senate | WY | Democratic | 1 |
| Morse, Alex | U.S. House | MA | Democratic | 1 |
| Morse, Andrea S | U.S. House | NY | Democratic | 1 |
| Morse, Chuck | U.S. Senate | NH | Republican | 1 |
| Morse, Jessica | U.S. House | CA | Democratic | 1 |
| Morse, John III | U.S. House | MD | Democratic | 1 |
| Mortensen, Jason | President | US | UNK | 1 |
| Mortensen, Michelle | U.S. House | NV | Republican | 1 |
| Morton, Craig | U.S. House | IL | Democratic | 1 |
| Mosby, Wendell | U.S. House | IN | Democratic | 1 |
| Moseley, William Jon Mr | President | US | Independent | 1 |
| Mosely, Brandon | U.S. House | CA | Democratic | 1 |
| Moser, John | U.S. House | MD | Democratic | 1 |
| Moser, Laura | U.S. House | TX | Democratic | 1 |
| Moser, Mavrick Cody Mr. | U.S. House | AZ | Republican | 1 |
| Moser, Robert Duane Mr. Jr. | U.S. House | CO | NON | 1 |
| Moses, Mike | U.S. House | AL | Republican | 1 |
| Moses, Pamela | U.S. Senate | TN | IDP | 1 |
| Moses, Patrick | U.S. House | TX | Democratic | 1 |
| Moskowitz, Jared | U.S. House | FL | Democratic | 1 |
| Mosley, Mark | U.S. House | GA | Libertarian | 1 |
| Moss, Charles Kenneth | U.S. Senate | NC | Republican | 1 |
| Moss, Charles Kenneth | President | US | Republican | 1 |
| Moss Jr, Anthony Kevin | President | US | Independent | 1 |
| Moss, Nicholas D | U.S. House | OH | OTH | 1 |
| Moss, Richard | U.S. House | IN | Republican | 1 |
| Moss, Richard Marc | U.S. House | IN | Republican | 1 |
| Moss, Solomon | U.S. House | CA | Republican | 1 |
| Mostafa, Ahmed | U.S. House | CA | Democratic | 1 |
| Motiwalla, Frances Yasmeen | U.S. House | CA | Democratic | 1 |
| Moua, Sou | U.S. House | CA | Republican | 1 |
| Moulton, Seth | U.S. House | MA | Democratic | 1 |
| Moulton, Seth | President | US | Democratic | 1 |
| Moutos, Nick Aden | U.S. House | TX | Republican | 1 |
| Mowers, Matt | U.S. House | NH | Republican | 2 |
| Mowrer, Jim | U.S. House | IA | Democratic | 1 |
| Mowrey, Christy Renee | U.S. House | TX | Libertarian | 1 |
| Mowry, Mark S. | U.S. Senate | SD | Republican | 1 |
| Moxley, Diane | U.S. House | NJ | Green | 1 |
| Moya, Paul | U.S. House | NM | Democratic | 1 |
| Moy, Daniel Robert Mr. | U.S. House | VA | Republican | 1 |
| Moyer, Eric | U.S. House | OH | Democratic | 1 |
| Moylan, James C. | U.S. House | GU | Republican | 1 |
| Moyowasifza-Curry, Sedinam Kinamo Chri | President | US | Green | 1 |
| Mozumder, Mohammad S. | U.S. House | MD | Democratic | 1 |
| Mpiana, Mfumu Metamorphosis Rev | U.S. Senate | WA | UN | 1 |
| Mrochek, Jason | U.S. House | TX | Republican | 1 |
| Mrvan, Frank J. | U.S. House | IN | Democratic | 1 |
| Mua, Toni | U.S. House | MI | Democratic | 1 |
| Mucarsel-Powell, Debbie | U.S. House | FL | Democratic | 1 |
| Mucarsel-Powell, Debbie | U.S. Senate | FL | Democratic | 1 |
| Muchlinski, Birdie Jane | U.S. House | WA | Democratic | 1 |