46a Candidate in election, originally in area of Greece (7)
N???n?e
Nominee?
55a This is becoming violent, unacceptable from start to finish (10)
Looks like 'throughout', I can see the violent (rough) and unacceptable (out) but not the first two letters of the answer.
40d Silly nun in game that is inconsequential (9)
Begins with 'u'.
Is 'unmeaning' a word?