Setting context to DeletedState doesn't invoke OnStateElection

If a job's state context is explicitly set to DeletedState, then it's deleted but the OnStateElection filter event is not invoked with the new state.

``` csharp
public void OnStateElection(ElectStateContext context)
{
if (some_condition)
{
// this should invoke this filter event with the new state, but it doesn't
context.CandidateState = new DeletedState();
}
}
```

Is this by design or a bug?