From the state Supreme Court:
Appellants challenge the constitutionality of I-960. Such a challenge is not subject to preelection review. While the disputed sections of the initiative may be subject to constitutional challenge, if passed, the initiative does not exceed the scope of the legislative power. The initiative therefore may be placed on the general election ballot.
Affirmed.
...Because we do not review the validity of I-960, we do not address whether the challenged portions of the initiative, if invalid, may be "severed" so that the valid provisions may be placed on the ballot. But the prospect of engaging in the "troublesome" task of editing the initiative while remaining true to the intent of those who signed the initiative petition is further reason to avoid preelection review...
I only skimmed the desion, so if someone wants to do a more thorough review, feel free to post up in the comments.