Regional Presidential Primaries Act

Directs that five regional primaries be held each Presidential election year. Sets forth guidelines for such primaries relative to (1) date, (2) content of ballots, (3) qualifying for placement on ballots, (4) eligibility for voting, and (5) scope of voter choice.

Requires allocation of State convention delegates on the basis of percentage of votes received within the State.

Requires each delegate to vote for the candidate for whom he was appointed until (1) two ballots have been taken, (2) such candidate receives less than 20 percent of the votes cast, or (3) such candidate releases him.