primary
1 : of first rank, value, or importance
2 : belonging to the first group or order in successive divisions, combinations, or ramifications
pri·mar·i·ly [prī-mer-ə-lē]
adv
n
pl: -ries 1 : caucus 2 : an election in which qualified voters nominate or express a preference for a particular candidate or group of candidates for political office, choose party officials, or select delegates for a party convention