A truly excellent letter that falls apart because it lacks a proactive closer:

Dear Mrs. Johannssen,
My strong academic background in political science and international relations would allow me to contribute to the state and local reporting position that you are currently advertising.

Municipal reporting demands the abilities to comprehend, analyze, critique, and translate complex government issues. The Stockton State political science department has transformed me into a well-informed and knowledgeable person in government affairs. The department has acknowledged my special abilities to study and communicate political issues. During my junior year I was chosen from a selected group to participate in the 25th annual Student Model Senate.

My courses also emphasized verbal communication skills, analytical, and creative writing skills. These are the skills that will enable me to effectively communicate to your readers.

I can make myself available for an interview at your convenience. I may be reached at 609/555-3106.

Thank you for your time and consideration.