This Note provides the American Heart Association (AHA) with a description and segmentation of the market for cardiovascular research support as expressed in applications to the National Institutes of Health (NIH). The Note also compares the grant programs of the National Center of the AHA with the programs of NIH and indicates the need for additional support as expressed through unfunded AHA and NIH applications. This information is designed to aid a task force reviewing the AHA's program of research awards with the aid of a framework describing the needs for cardiovascular research support. The framework lists the major steps in the career path of an investigator, the goals that can be obtained by support at that stage, and the types of awards that are appropriate for that stage. The purpose of this Note is to assess the validity of this framework and to provide data to evaluate the demand at each career stage.