2012-10-06 19:07:02 UTC
3 other methods:
Proposed by Congress with a 2/3 majority vote in both houses -> ratified by conventions in 3/4s of the states.
Proposed at a national convention called by Congress when requested by 2/3s of the State legislatures -> ratified by 3/4 of the State legislatures.
Proposed at a national convention called by Congress when requested by 2/3s of the State legislatures -> ratified by conventions in 3/4s of the states.