In some states, such as lowa and Nevada, the presidential primaries are decided by caucuses rather than a primary election. The caucuses determine winners at the precinct level, and turnout is often
low. As a result, it is not uncommon in a close race to have some caucuses end in a tie. The article "A Nevada Tie to Be Decided by Cards't reported that in Nevada a tie is decided by having each side
draw a card, with the high card winning. In lowa, a tie is decided by a coin toss. In 2016, in the primary race between Hillary Clinton and Bernie Sanders, some Democratic caucuses were in fact decided
by coin tosses.
