La. Const. art. I, § 17

(A) Jury Trial in Criminal Cases. A criminal case in which the punishment may be capital shall be tried before a jury of twelve persons, all of whom must concur to render a verdict. A case for an offense committed prior to January 1, 2019, in which the punishment is necessarily confinement at hard labor shall be tried before a jury of twelve persons, ten of whom must concur to render a verdict. A case for an offense committed on or after January 1, 2019, in which the punishment is necessarily confinement at hard labor shall be tried before a jury of twelve persons, all of whom must concur to render a verdict. A case in which the punishment may be confinement at hard labor or confinement without hard labor for more than six months shall be tried before a jury of six persons, all of whom must concur to render a verdict. The accused shall have a right to full voir dire examination of prospective jurors and to challenge jurors peremptorily. The number of challenges shall be fixed by law. Except in capital cases, a defendant may knowingly and intelligently waive his right to a trial by jury but no later than forty-five days prior to the trial date and the waiver shall be irrevocable.

(B) Joinder of Felonies; Mode of Trial. Notwithstanding any provision of law to the contrary, offenses in which punishment is necessarily confinement at hard labor may be charged in the same indictment or information with offenses in which the punishment may be confinement at hard labor; provided, however, that the joined offenses are of the same or similar character or are based on the same act or transaction or on two or more acts or transactions connected together or constituting parts of a common scheme or plan; and provided further, that cases so joined shall be tried by a jury composed of twelve jurors, ten of whom must concur to render a verdict.