 Turpin and Siddiqui challenged the constitutionality of the provisions on two grounds.First, they claimed that section 11(f) of the "Charter" granted them a right to choose between judge alone or judge and jury, which was violated by the Code provisions.Second, they argued that since there is an exception to the Code provisions for trials in Alberta, there was a violation of their right to equality under section 15 of the "Charter".