American Political Science Association
This site, devoted to "networking a world of scholars," offers resources and links to political science internships.
U.S. Department of State
The deadlines for the State Department internship program come quite early. To apply for a summer internship, the deadline is November; for fall, the deadline is February; for spring, the deadline is July.
Federal Bureau of Investigation
The FBI also offers an extensive internship program. Be sure to note the deadlines for these as well-- for a summer internship, apply by September.
American Agricultural Economics Association
Individuals looking for internships or jobs in agricultural economics can search here.
Maryland Department of Transportation (MDOT) Fellows are given the opporutnity to see the rewards and challenges of working within the field of transportation. Interns gain valuable exposure to the tremendous workforce behind MDOT while developing policy papers in teams that address significant issues facing MDOT today. Participating students earn $3,500 during their 8 week internship. Applications to apply are generally due at the end of March but if you have any questions please contact Christine Routzahn at email@example.com.