South Dakota voters on Tuesday will decide the fate of Initiated Measure 15.
That measure would raise the state's sales tax from 4 percent to 5 percent, with the additional revenue split between K-12 public education and Medicaid.
Supporters of the law say it would provide a constant funding source for education and medicaid.
Critics say the funds are too specific, and would not be flexible to the state's future needs.
A "yes" vote on Initiated Measure 15 supports increasing the sales tax 1 cent on every dollar, and
a "no" vote opposes it.