the ballot shall permit voters to rank every candidate in the election. If it is not feasible for the ballot to permit voters to rank every candidate, the State may limit the number of candidates who may be ranked on the ballot to not fewer than 6. (3) The ballot shall include such instructions as the State considers necessary to enable the voter to rank candidates and successfully cast the ballot under the system. 322. Prohibiting additional runoff elections (a) Primary elections No State may hold a runoff primary election for the office of Senator or the office of Representative in Congress after the date established under State law for the primary election for such office. (b) General elections No State may hold a runoff general election for the office of Senator or the office of Representative in Congress after the date established under section 25 of the Revised Statutes of the United States ( 2 U.S.C. 7 ) for the regularly scheduled general election for such office. (c) Special elections No State may hold a runoff special election for the office of Senator or the office of Representative in Congress after the date established by the State under State law for such special election for such office. 323. Treatment of primary elections (a) Conditions for holding nonpartisan blanket primary elections A State may hold a nonpartisan blanket primary election for the office of Senator or the office of Representative in Congress only if State law provides that at least 3 candidates advance to the subsequent general election, or, if write-in candidates are allowed in the general election, at least 2 candidates advance. (b) Rule of construction Nothing in this title shall be construed to require a State to hold a primary election for the office of Senator or the office of Representative in Congress prior to the date established under section 25 of the Revised Statutes of the United States ( 2 U.S.C. 7 ) for the regularly scheduled general election for such office, so long as the determination of the candidates who are