Will the Teamsters endorse a Republican?

This market will resolve to "Yes" if the International Brotherhood of Teamsters formally endorses a Republican candidate for President of the United States by November 4, 11:59 PM ET. Otherwise this market will resolve to "No". If the International Brotherhood of Teamsters formally endorses another candidate for President of the United States this market will immediately resolve to "No". The resolution source for this market will be official information from the International Brotherhood of Teamsters or one of their representatives.