Final answer:
In Texas, political parties determine voters' preferences for president through both presidential preference primaries and caucuses.
Explanation:
Political parties in Texas determine the voters' preferences for president by holding a presidential preference primary and also caucusing. The primary elections allow people to vote, and delegates are awarded based on the vote. The caucus system involves a series of meetings leading up to district and state conventions to decide on delegates.
Learn more about Presidential nomination process here:
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