Kentucky has closed party Primary Elections, which means you must register as a Democrat or a Republican to be eligible to vote in that party's Primary in May.
If you choose to register with a political group or organization, or as an Independent, you cannot vote in the party primaries, but you may vote in all non-partisan primaries. These races include:
Soil and Water Conservation, and
all Judicial Offices
You may change your political affiliation between the Primary adn December 31st, to be eligible to vote in you new party's next Primary Election. If you change your affiliation anytime between January 1st and the Primary Election date, you will only be able to vote in the non-partisan races.