2019 Legislators
| Last Name | First Name | Chamber | Party | State | Rating | Taxpayer Category |
|---|---|---|---|---|---|---|
| Kaptur | Marcy | House | D | Ohio | 0 | Hostile |
| Katko | John | House | R | New York | 38 | Unfriendly |
| Keating | William | House | D | Massachusetts | 3 | Hostile |
| Keller | Fred | House | R | Pennsylvania | 93 | Taxpayer Hero |
| Kelly | Trent | House | R | Mississippi | 100 | Taxpayer Super Hero |
| Kelly | Mike | House | R | Pennsylvania | 97 | Taxpayer Hero |
| Kelly | Robin | House | D | Illinois | 1 | Hostile |
| Kennedy | Joseph | House | D | Massachusetts | 0 | Hostile |
| Khanna | Ro | House | D | California | 1 | Hostile |
| Kildee | Dan | House | D | Michigan | 1 | Hostile |
| Kilmer | Derek | House | D | Washington | 1 | Hostile |
| Kim | Andy | House | D | New Jersey | 1 | Hostile |
| Kind | Ron | House | D | Wisconsin | 4 | Hostile |
| King | Steve | House | R | Iowa | 95 | Taxpayer Hero |
| King | Peter | House | R | New York | 47 | Lukewarm |
| Kinzinger | Adam | House | R | Illinois | 69 | Friendly |
| Kirkpatrick | Ann | House | D | Arizona | 1 | Hostile |
| Krishnamoorthi | Raja | House | D | Illinois | 1 | Hostile |
| Kuster | Ann McLane | House | D | New Hampshire | 3 | Hostile |
| Kustoff | David | House | R | Tennessee | 97 | Taxpayer Hero |
| LaHood | Darin | House | R | Illinois | 96 | Taxpayer Hero |
| LaMalfa | Doug | House | R | California | 96 | Taxpayer Hero |
| Lamb | Conor | House | D | Pennsylvania | 4 | Hostile |
| Lamborn | Doug | House | R | Colorado | 100 | Taxpayer Super Hero |
| Langevin | Jim | House | D | Rhode Island | 1 | Hostile |
| Larsen | Rick | House | D | Washington | 3 | Hostile |
| Larson | John | House | D | Connecticut | 1 | Hostile |
| Latta | Bob | House | R | Ohio | 100 | Taxpayer Super Hero |
| Lawrence | Brenda | House | D | Michigan | 1 | Hostile |
| Lawson | Al | House | D | Florida | 1 | Hostile |
| Lee | Susie | House | D | Nevada | 3 | Hostile |
| Lee | Barbara | House | D | California | 0 | Hostile |
| Lesko | Debbie | House | R | Arizona | 100 | Taxpayer Super Hero |
| Levin | Mike | House | D | California | 1 | Hostile |
| Levin | Andy | House | D | Michigan | 0 | Hostile |
| Lewis | John | House | D | Georgia | 1 | Hostile |
| Lieu | Ted | House | D | California | 0 | Hostile |
| Lipinski | Daniel | House | D | Illinois | 3 | Hostile |
| Loebsack | Dave | House | D | Iowa | 1 | Hostile |
| Lofgren | Zoe | House | D | California | 1 | Hostile |
| Long | Billy | House | R | Missouri | 98 | Taxpayer Hero |
| Loudermilk | Barry | House | R | Georgia | 99 | Taxpayer Hero |
| Lowenthal | Alan | House | D | California | 0 | Hostile |
| Lowey | Nita | House | D | New York | 1 | Hostile |
| Lucas | Frank | House | R | Oklahoma | 82 | Taxpayer Hero |
| Luetkemeyer | Blaine | House | R | Missouri | 80 | Taxpayer Hero |
| Lujan | Ben Ray | House | D | New Mexico | 1 | Hostile |
| Luria | Elaine | House | D | Virginia | 3 | Hostile |
| Lynch | Stephen | House | D | Massachusetts | 1 | Hostile |
| Malinowski | Tom | House | D | New Jersey | 1 | Hostile |