That Affect A President Choosing a Nominee
The Three Factors
1) Qualifications: The achievements of person, whether they have been a federal judge or not, experience with politics. It impacts the President's decision by experience with politics would be a good qualification as well as being a federal judge so the President would be more likely to nominate those people.
2) Ideology: The beliefs and ideas. The President would want to nominate the people who have the same beliefs and opinions on certain things as him.
3) Outgoing justice: Supreme Court Ideology. For eg: If a retiring justice is a political liberal, Senate liberals might fight a conservative candidate and nail in order not to lose a seat on the Court that supports their ideology. In that case, it would be better for the President to nominate a moderate candidate.