"However, it seems obvious to me that their interest in protecting their jobs shows an absence of moral rectitude, which will allow this to continue."

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It's not that simple. Keeping seats and maintaining a legislative majority are paramount to achieving an ideological goal. The chief executive being a pompous arse isn't an easy one to defend. But opposing him jeopardizes losing that legislative majority to another party that gets a clearer path to its goals. 

This isn't the say the current majority is handling particularly artfully. But it can be a tight line to walk.