Why is Nevada holding both a primary and caucuses?

Bifurcated format is confusing to voters and renders results difficult to understand - here's how it works

The first presidential election contest in the western US will feature a bifurcated primary and caucuses format that's both confusing to voters and renders results difficult to understand.

Nevada's primary for Democrats and (some) Republicans is on 6 February, while its caucuses for (other) Republicans is on 8 February.