Kansas GOP officials say Ohio Gov. John Kasich is the first presidential candidate to file for the party's caucus.
Kasich said in a statement Thursday that he believes Kansas is an important state and his campaign plans to be competitive there.
The Kansas Presidential Caucus will be March 5 in 95 locations across the state. The sites have not yet been chosen.
Candidates must pay a $15,000 filing fee and complete an informational form to register for the caucus.