Which of the following comes last in the nomination process? 1.caucus
2.national conventions
3. primary

2. .national conventions

Explanation:

Caucus and primary are basically carried out for the same purpose. They're  2 different methods to select several presidential candidates.  

In Caucus, the presidential candidates are elected by the party leaders. In primary, the presidential candidates are elected by the voters themselves.

After the candidates are chosen, then the process move on to the national conventions. In the convention, one final candidate will be chosen  to represent the party in the election.

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