Political scientist samuel popkin argues that a strong campaign can be a decisive factor in whether campaigns thrive or founder.

The words that comes in the blank space is "chief of staff".

The absolute most imperative piece of an effective group is a chief of staff sufficiently solid to be a fair representative. Weak head of staff are the most compelling motivation battles fumble. The chief of staff, when given legitimate expert, acts at the guardian to the competitor, guaranteeing that those requesting his consideration are acting strongly with whatever remains of the group and not offering independent guidance.

They wanted to make slaves out of them.they wanted force them to move off their landthey wanted to make them grow crops for very little pay.they refused to speak native american languages