Wyoming will send 18 delegates to July's Democratic National Convention in Philadelphia. Fourteen are up for grabs, and four are super delegates who have already said they are supporting former Secretary of State Hillary Clinton.

April 9 is key, however, because the proportion of delegates selected at the county level will be the same proportion the state sends to Philadelphia.

On April 9, Democrats will choose delegates who support Clinton, U.S. Sen. Bernie Sanders of Vermont and San Diego businessman Rocky De La Fuente. Democrats can also choose to be uncommitted.

Democratic presidential candidates need at least 2,383 delegates to win the national nomination.

Clinton's campaign now has 13 staffers working in Wyoming. Sanders has four paid staffers and two volunteers, Van Cleave said.

“What’s really exciting this year is we have two really strong candidates leading the Democratic ticket,” she said. “So both candidates are working really hard to turn out voters, especially here in Wyoming. It’s really energizing voters.”