See here. My earlier analysis of the statute in question is here. As I understand the argument of the state, it is that because a statewide election was held earlier in 2007, the governor has the right to call the election at the next statewide election. That interpretation seems to ignore the word “shall” in “shall occur in a year….” and also does not seem to make much sense in terms of the likely intent of the statute—to provide for a consolidated election in the interest of economy.