Pay attention to power bases
How one can predict what another person will do under pressure? I admit that nothing is 100%, but it is better than 50%. The first thing is to pay attention to social and economic power bases. Those are the people where social and economic approval is wanted and valued. For example, two senators said they would obstruct a nomination unless they got a concession. One also said he really wanted to vote for the nomination. Both senators ended up withdrawing their objections to the nomination consistent with the social and power bases they ascribe to. The reason for the withdrawal was ...