Total Delegates* - This number includes pledged delegates and unpledged RNC member delegates
Pledged Delegates* - These are delegates won by candidates in primaries and caucuses; they pledge to support their candidates at the national conventions.
Unpledged RNC* - Unpledged Republican National Committee member delegates. Unpledged delegates in the Republican Party do not have to indicate a candidate preference, but a majority are elected just like pledged delegates. There are 123 unpledged RNC members that become delegates automatically.
Delegates Needed to Win: This refers to the total number of delegate votes needed by a candidate to win the party's nomination.