Maryland
| Cardin, Benjamin L. - (D – MD) | Class I |
| 509 HART SENATE OFFICE BUILDING WASHINGTON DC 20510 | |
| (202) 224-4524 | |
| e-Mail Senator: cardin.senate.gov/contact/email.cfm | |
| Mikulski, Barbara A. - (D – MD) | Class III |
| 503 HART SENATE OFFICE BUILDING WASHINGTON DC 20510 | |
| (202) 224-4654 | |
| e-Mail Senator: mikulski.senate.gov/Contact/contact.cfm | |
