The first and most widely publicized caucus today is held in the state of

The first and most widely publicized caucus today is held in the state of LOWA.

Explanation:

The Caucus means a meeting of political party members to decide candidates who will lead the election campaign. If you want to know where the caucus meeting is held you need to visit that states government website. For example, Lowa which is the midwestern united state had recent caucus about the election.

In presidential elections, primary election and caucuses held important role. Both are for electing the nominee for elections. But causes meeting will decide the nominee who will lead the government campaign for the party.