Theresa A. Jenkins was active in Wyoming education, prohibition, and suffrage. A champion of woman suffrage, she was influential in retaining the suffrage clause in the state's Constitution during the Constitutional Convention of 1889. She gave what some say was the greatest speech of the day.
"Theresa A. Jenkins was then introduced to the immense audience. Proceeding to the front of the platform, the lady in clear, forceful tones which penetrated to the very outskirts of the crowd, began and delivered without notes or manuscript an address which in ability, logic and eloquence has rarely if ever been equalled by any woman of the land. She was grandly equal to the occasion."