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|  | Pace, Stephen | D | GA | U.S. House | 1945 – 1952 |
| | Packard, Ronald C. | R | CA | U.S. House | 1983 – 2001 |
| | Packwood, Robert William | R | OR | U.S. Senate | 1969 – 1995 |
| | Padilla, Alex | D | CA | U.S. Senate | 2021 – 2029 |
| | Palazzo, Steven | R | MS | U.S. House | 2011 – 2023 |
| | Pallone, Frank | D | NJ | U.S. House | 1988 – 2025 |
| | Palmer, Gary | R | AL | U.S. House | 2015 – 2025 |
| | Panetta, Jimmy | D | CA | U.S. House | 2017 – 2025 |
| | Panetta, Leon Edward | D | CA | U.S. House | 1977 – 1993 |
| | Pappas, Chris | D | NH | U.S. House | 2019 – 2025 |
| | Pappas, Michael | R | NJ | U.S. House | 1997 – 1999 |
| | Parker, Michael | R | MS | U.S. House | 1989 – 1999 |
| | Parris, Stanford E. | R | VA | U.S. House | 1973 – 1991 |
| | Pascrell, Bill | D | NJ | U.S. House | 1997 – 2025 |
| | Pashayan, Charles, Jr. | R | CA | U.S. House | 1979 – 1991 |
| | Passman, Otto Ernest | D | LA | U.S. House | 1947 – 1977 |
| | Pastor, Ed | D | AZ | U.S. House | 1991 – 2015 |
| | Pastore, John Orlando | D | RI | U.S. Senate | 1950 – 1977 |
| | Patman, John William Wright | D | TX | U.S. House | 1945 – 1977 |
| | Patman, William Neff | D | TX | U.S. House | 1981 – 1985 |
| | Patrick, Luther | D | AL | U.S. House | 1945 – 1947 |
| | Patten, Edward James | D | NJ | U.S. House | 1963 – 1981 |
| | Patten, Harold Ambrose | D | AZ | U.S. House | 1949 – 1955 |
| | Patterson, Elizabeth J. | D | SC | U.S. House | 1987 – 1993 |
| | Patterson, Ellis Ellwood | D | CA | U.S. House | 1945 – 1947 |
| | Patterson, James Thomas | R | CT | U.S. House | 1947 – 1959 |
| | Patterson, Jerry Mumford | D | CA | U.S. House | 1975 – 1985 |
| | Pattison, Edward Worthington | D | NY | U.S. House | 1975 – 1979 |
| | Paul, Rand | R | KY | U.S. Senate | 2011 – 2029 |
| | Paul, Ron | R | TX | U.S. House | 1976 – 2013 |
| | Paulsen, Erik | R | MN | U.S. House | 2009 – 2019 |
| | Paxon, Bill | R | NY | U.S. House | 1989 – 1999 |
| | Payne, Donald | D | NJ | U.S. House | 2012 – 2024 |
| | Payne, Frederick George | R | ME | U.S. Senate | 1953 – 1959 |
| | Payne, Lewis Franklin, Jr. | D | VA | U.S. House | 1988 – 1997 |
| | Pearce, Steve | R | NM | U.S. House | 2003 – 2019 |
| | Pearson, James Blackwood | R | KS | U.S. Senate | 1962 – 1978 |
| | Pease, Donald James | D | OH | U.S. House | 1977 – 1993 |
| | Pease, Ed | R | IN | U.S. House | 1997 – 2001 |
| | Peden, Preston Elmer | D | OK | U.S. House | 1947 – 1949 |
| | Pell, Claiborne de Borda | D | RI | U.S. Senate | 1961 – 1997 |
| | Pelly, Thomas Minor | R | WA | U.S. House | 1953 – 1973 |
| | Pelosi, Nancy | D | CA | U.S. House | 1987 – 2025 |
| | Peltola, Mary | D | AK | U.S. House | 2022 – 2025 |
| | Pence, Greg | R | IN | U.S. House | 2019 – 2025 |
| | Pence, Mike | R | | U.S. Senate | 2001 – 2021 |
| | Penny, Timothy Joseph | D | MN | U.S. House | 1983 – 1995 |
| | Pepper, Claude Denson | D | FL | U.S. House | 1936 – 1989 |
| | Percy, Charles Harting | R | IL | U.S. Senate | 1967 – 1985 |
| | Perdue, David | R | GA | U.S. Senate | 2015 – 2021 |
| | Perez, Marie Glusenkamp | D | WA | U.S. House | 2023 – 2025 |
| | Perkins, Carl Christopher | D | KY | U.S. House | 1984 – 1993 |
| | Perkins, Carl Dewey | D | KY | U.S. House | 1949 – 1984 |
| | Perlmutter, Ed | D | CO | U.S. House | 2007 – 2023 |
| | Perriello, Tom | D | VA | U.S. House | 2009 – 2011 |
| | Perry, Scott | R | PA | U.S. House | 2013 – 2025 |
| | Peters, Gary | D | MI | U.S. Senate | 2009 – 2027 |
| | Peters, Scott | D | CA | U.S. House | 2013 – 2025 |
| | Peterson, Collin C. | D | MN | U.S. House | 1991 – 2021 |
| | Peterson, Douglas Brian (Pete) | D | FL | U.S. House | 1991 – 1997 |
| | Peterson, Hugh | D | GA | U.S. House | 1945 – 1947 |
| | Peterson, James Hardin | D | FL | U.S. House | 1945 – 1952 |
| | Peterson, John | R | PA | U.S. House | 1997 – 2009 |
| | Peterson, Morris Blaine | D | UT | U.S. House | 1961 – 1963 |
| | Petri, Tom | R | WI | U.S. House | 1979 – 2015 |
| | Pettersen, Brittany | D | CO | U.S. House | 2023 – 2025 |
| | Pettis, Jerry Lyle | R | CA | U.S. House | 1967 – 1975 |
| | Pettis, Shirley Neil | R | CA | U.S. House | 1975 – 1979 |
| | Peyser, Peter A. | D | NY | U.S. House | 1971 – 1983 |
| | Pfeifer, Joseph Lawrence | D | NY | U.S. House | 1935 – 1952 |
| | Pfeiffer, William Louis | R | NY | U.S. House | 1949 – 1952 |
| | Pfluger, August | R | TX | U.S. House | 2021 – 2025 |
| | Pfost, Gracie Bowers | D | ID | U.S. House | 1953 – 1963 |
| | Phelps, David | D | IL | U.S. House | 1999 – 2003 |
| | Philbin, Philip Joseph | D | MA | U.S. House | 1945 – 1972 |
| | Phillips, Dayton Edward | R | TN | U.S. House | 1947 – 1952 |
| | Phillips, Dean | D | MN | U.S. House | 2019 – 2025 |
| | Phillips, John | R | CA | U.S. House | 1945 – 1957 |
| | Pickering, Charles W. "Chip" Jr. | R | MS | U.S. House | 1997 – 2009 |
| | Pickett, Owen B. | D | VA | U.S. House | 1987 – 2001 |
| | Pickett, Thomas Augustus | D | TX | U.S. House | 1945 – 1952 |
| | Pickle, James Jarrell (Jake) | D | TX | U.S. House | 1963 – 1995 |
| | Pike, Otis Grey | D | NY | U.S. House | 1961 – 1979 |
| | Pilcher, John Leonard | D | GA | U.S. House | 1953 – 1965 |
| | Pillion, John Raymond | R | NY | U.S. House | 1953 – 1965 |
| | Pingree, Chellie | D | ME | U.S. House | 2009 – 2025 |
| | Pirnie, Alexander | R | NY | U.S. House | 1959 – 1973 |
| | Pittenger, Robert | R | NC | U.S. House | 2013 – 2019 |
| | Pittenger, William Alvin | R | MN | U.S. House | 1945 – 1947 |
| | Pitts, Joe | R | PA | U.S. House | 1997 – 2017 |
| | Platts, Todd R. | R | PA | U.S. House | 2001 – 2013 |
| | Ploeser, Walter Christian | R | MO | U.S. House | 1945 – 1949 |
| | Plumley, Charles Albert | R | VT | U.S. House | 1945 – 1952 |
| | Poage, William Robert | D | TX | U.S. House | 1945 – 1979 |
| | Pocan, Mark | D | WI | U.S. House | 2013 – 2025 |
| | Podell, Bertram L. | D | NY | U.S. House | 1968 – 1975 |
| | Poe, Ted | R | TX | U.S. House | 2005 – 2019 |
| | Poff, Richard Harding | R | VA | U.S. House | 1953 – 1973 |
| | Poliquin, Bruce | R | ME | U.S. House | 2015 – 2019 |
| | Polis, Jared | D | CO | U.S. House | 2009 – 2019 |
| | Polk, James Gould | D | OH | U.S. House | 1949 – 1959 |
| | Pollock, Howard Wallace | R | AK | U.S. House | 1967 – 1971 |
| | Pombo, Richard W. | R | CA | U.S. House | 1993 – 2007 |
| | Pomeroy, Earl | D | ND | U.S. House | 1993 – 2011 |
| | Pompeo, Mike | R | KS | U.S. House | 2011 – 2017 |
| | Pool, Joe Richard | D | TX | U.S. House | 1963 – 1968 |
| | Porter, Charles Orlando | D | OR | U.S. House | 1957 – 1961 |
| | Porter, John Edward | R | IL | U.S. House | 1980 – 2001 |
| | Porter, Jon | R | NV | U.S. House | 2003 – 2009 |
| | Porter, Katie | D | CA | U.S. House | 2019 – 2025 |
| | Portman, Rob | R | OH | U.S. Senate | 1993 – 2023 |
| | Posey, Bill | R | FL | U.S. House | 2009 – 2025 |
| | Poshard, Glenn | D | IL | U.S. House | 1989 – 1999 |
| | Potter, Charles Edward | R | MI | U.S. Senate | 1947 – 1959 |
| | Potts, David Matthew | R | NY | U.S. House | 1947 – 1949 |
| | Poulson, C. Norris | R | CA | U.S. House | 1943 – 1953 |
| | Powell, Adam Clayton, Jr. | D | NY | U.S. House | 1945 – 1971 |
| | Powell, Walter Eugene | R | OH | U.S. House | 1971 – 1975 |
| | Powers, David Lane | R | NJ | U.S. House | 1945 – 1945 |
| | Pratt, Eliza Jane | D | NC | U.S. House | 1946 – 1947 |
| | Pressler, Larry Lee | R | SD | U.S. Senate | 1975 – 1997 |
| | Pressley, Ayanna | D | MA | U.S. House | 2019 – 2025 |
| | Preston, Prince Hulon, Jr. | D | GA | U.S. House | 1947 – 1961 |
| | Preyer, Lunsford Richardson | D | NC | U.S. House | 1969 – 1981 |
| | Price, Charles Melvin | D | IL | U.S. House | 1945 – 1988 |
| | Price, David | D | NC | U.S. House | 1987 – 2023 |
| | Price, Emory Hilliard | D | FL | U.S. House | 1945 – 1949 |
| | Price, Robert Dale | R | TX | U.S. House | 1967 – 1975 |
| | Price, Tom | R | GA | U.S. House | 2005 – 2017 |
| | Priest, James Percy | D | TN | U.S. House | 1945 – 1956 |
| | Pritchard, Joel McFee | R | WA | U.S. House | 1973 – 1985 |
| | Prokop, Stanley A. | D | PA | U.S. House | 1959 – 1961 |
| | Prouty, Winston Lewis | R | VT | U.S. Senate | 1951 – 1971 |
| | Proxmire, William | D | WI | U.S. Senate | 1957 – 1989 |
| | Pryce, Deborah | R | OH | U.S. House | 1993 – 2009 |
| | Pryor, David Hampton | D | AR | U.S. Senate | 1967 – 1997 |
| | Pryor, Mark | D | AR | U.S. Senate | 2003 – 2015 |
| | Pucinski, Roman Conrad | D | IL | U.S. House | 1959 – 1973 |
| | Purcell, Graham Boynton, Jr. | D | TX | U.S. House | 1962 – 1973 |
| | Pursell, Carl Duane | R | MI | U.S. House | 1977 – 1993 |
| | Purtell, William Arthur | R | CT | U.S. Senate | 1952 – 1959 |
| | Putnam, Adam H. | R | FL | U.S. House | 2001 – 2011 |