Using Yale's five-stage developmental model, identify the stages of Beto O'Rourke'spresidential -campaign giving specific examples from history.

Using Yale's five-stage developmental model, identify the stages of Beto O'Rourke's presidential -campaign giving specific examples from history. Give specific attention to applying the stages of a campaign to history.  You must use EBSCO or other CREDIBLE on-line sources. You may also use books available through Ebrary and net library for this assignment.