Guided by the research questions, this study utilized a sequential explanatory mixed methods research design to examine senior executive leadership succession planning at four-year, predominately white, doctoral universities in the state of Georgia. Utilizing the Representative Bureaucracy theory and the Mateso SPM conceptual model, this study employed a pragmatic epistemology coupled with the critical inquiry to collect and analyze data. The purpose of this study was to explore succession planning and management of senior executive leadership by examining the SPM practices and processes surrounding the nomination of successors, with implications for diversifying senior executive leadership. Included in this study is an extensive literature review including the following: Leadership crisis in higher education, historical perspectives, diversity in higher education, diversity management, succession planning, succession planning and management, ending with succession planning and management theoretical consideration. This research study explored the effectiveness of SPM practices at the institutional and divisional levels at four subject universities. Associated factors and perceptions were examined to identify patterns that facilitate an inclusive leadership environment. The study employed an explanatory mixed methods research design as suggested by Creswell (2015). Data findings are summarized in the following categories:Unit Driven Informal Practices (SPM Practices), Professional Development (leadership commitment), Decentralized organization (organizational culture), and Diversity management and various factors. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]