Possible Clues:

• Graphic often including insets of AK and HI
• Where you'll see ME
• Graphic displaying OK
• Where ID is shown?
• One often has a star next to Washington, D.C
• It often has two insets
• Chart often with insets of Alaska and Hawaii
• Graphic on a pres. election night
• Where to find MA and PA?
• Many an electoral chart, in brief