Most important divisions relevant to this policy

These are the most important divisions related to the policy “for requiring Parliamentary approval of military deployments” which David Johnston could have attended. They are weighted much more strongly than other divisions when calculating the position of David Johnston on this policy.

Division	David Johnston	Supporters vote
4th Sep 2014, 12:52 PM – Senate Defence Legislation Amendment (Parliamentary Approval of Overseas Service) Bill 2014 - Second Reading - Agree with the bill's main idea	absent	Yes

Other divisions relevant to this policy

These are less important divisions which are related to the policy “for requiring Parliamentary approval of military deployments” which David Johnston could have attended.

Division	David Johnston	Supporters vote
17th Mar 2015, 3:49 PM – Senate Motions — Troop Deployment to Iraq	absent	Yes
19th Mar 2013, 3:42 PM – Senate Motions - Iraq - Independent inquiry	absent	Yes

How "We can't say anything concrete about how they voted on" is worked out

Normally a person's votes count towards a score which is used to work out a simple phrase to summarise their position on a policy. However in this case David Johnston was absent during all divisions for this policy. So, it's impossible to say anything concrete.