CHEYENNE, Wyo. (AP) - Wyoming voters are set to decide Tuesday whether to change the state constitution to allow the investment of billions more of state funds in the stock market.

Wyoming currently has about $20 billion in various funds. Voters are set to decide whether roughly $6 billion of that total which previously could only be invested in bonds could be at least partially invested in stocks.

Supporters of the amendment argue that Wyoming's sagging energy economy combined with low yields in the bond market make it important to be able to diversify investments.

Opponents have said they fear the change would increase risk for the state's portfolio.

For the amendment to pass, it must receive endorsement from a majority of those who cast ballots.