Definition of candidacy in English:
 candidacy
nounPlural candidacies ˈkandɪdəsiˈkændɪdəsi
The fact or condition of standing for a position or status, especially in an election.
 he's going to announce his candidacy for the US Senate
 Example sentencesExamples
-  According to the poll, 86 percent of voters are now aware of his candidacy.
 -  In 1903, following his two failed candidacies, Bryan began preparing for a third try in the upcoming convention.
 -  Naked ambition, of course, has spawned many other candidacies.
 -  There was not just one powerful candidacy against the two main parties, but two.
 -  The early buzz around Clark's candidacy has faded.
 -  He's going to announce his candidacy for the U.S. Senate.
 -  He said withdrawal of his candidacy was "out of the question."
 -  He has failed thus far to provide a compelling rationale for his candidacy.
 -  She was warned privately to withdraw her candidacy for the position of general manager.
 -  The third-party activist dismisses the hand-wringing by Democrats over his candidacy.
 
Origin
  
Mid 19th century: from candidate + -acy.