
1) Quadrennial US occurrence
Found on
https://www.crosswordclues.com/clue/veepstakes

Veepstakes describes the quadrennial process in which candidates for President of the United States select a running mate. If the ticket wins, the running mate becomes the Vice President of the United States and first in line to the presidency. ==Etymology== A blend word of the words `veep` and `sweepstakes`, the neologism has been found in pr...
Found on
http://en.wikipedia.org/wiki/Veepstakes

competition to become vice-presidential candidate
Found on
http://phrontistery.info/v.html
No exact match found.