Democratic Party nominee James K. Polk was faced with the possibility that a Tyler ticket might shift votes away from the Democrats and provide Clay with the margin of victory in a close race. Tyler made clear in his convention acceptance speech that his overriding concern was the ratification of his Texas annexation treaty. Moreover, he hinted that he would drop out of the race once that end was assured, informing Polk, through Senator Robert J. Walker of Mississippi, that his campaign efforts were simply a vehicle to mobilize support for Texas annexation. Tyler concentrated his resources in the states of New York, Pennsylvania and New Jersey, all highly contested states in the election. Securing enough Democratic support, his withdrawal might prove indispensable to Polk.