Within one year from the date of the election of the charter commission the charter framed by the commission shall be submitted to the legislative body of the city or town which body shall provide for publication of said charter and shall provide for the submission of said charter to the electors of a city or town qualified to vote for general state officers at the general election next succeeding thirty days from the date of the submission of the charter by the charter commission. If said charter is approved by a majority of said electors voting thereon, it shall become effective upon the date fixed therein.