Allow for abstain votes.

database_setup/database.sql

@@ -19,7 +19,7 @@ CREATE TABLE CouncilMembers(
 CREATE TABLE Votes(
     ElectionCycle varchar(30) not null unique,
     VoterId bigint unsigned not null,
-    VotedForId bigint unsigned not null,
+    VotedForId bigint unsigned,
     FOREIGN KEY (ElectionCycle) REFERENCES ElectionInformation(ElectionCycle),
     PRIMARY KEY (ElectionCycle, VoterId)
 );