Seen this bug twice, the second time I am going through and election and I am not able to finish it; it just doesn't respond to me clicking next.   The first time was in a different spot, forget where.  I restarted the game from a save file and it went ok.  Maybe the save file will help. 

AutoSave 517.zip

Election ? You are talking about Endless Space 2 ? In case you do, you should move to Endless Space 2 forum here:  ---> https://www.games2gether.com/endless-space-2/forum