Amendment XXIII:

Section 1.

The District constituting the seat of government of the United States shall appoint in such manner as the Congress may direct:

A number of electors of President and Vice President equal to the whole number of Senators and Representatives in Congress to which the District would be entitled if it were a state, but in no event more than the least populous state; they shall be in addition to those appointed by the states, but they shall be considered, for the purposes of the election of President and Vice President, to be electors appointed by a state; and they shall meet in the District and perform such duties as provided by the twelfth article of amendment.

Section 2.

The Congress shall have power to enforce this article by appropriate legislation.

Washington DC had the power to vote for electoral college representatives at the time because Washington was not considered a state but could not vote for the president. 

→A story about the 23rd amendment found on the Washington Post←

I chose the story because it is a recent article based on a kids article leaving out the 23rd amendment. 

I chose this video because it is from a DC resident and they are expressing their feelings toward the amendment.