Colorado aligned itself Monday with other Democratic-run states in the West, joining a regional pact as it begins to reopen sectors of the state’s economy.

Gov. Jared Polis announced Colorado has joined California, Oregon, Washington and Nevada in the Western States Pact. The pact is a working group of governors with similar ideas for modifying stay-at-home orders and battling the spread of coronavirus. The governors of all five states are Democrats.

“Coloradans are working together to slow the spread of COVID-19 and have important information to share with, and to gain from, other states. I’m thrilled Colorado is joining the Western States Pact,” Polis said in a statement.

As states begin to make crucial decisions about reopening their economies, some have banded together with like-minded and neighboring states. Due to interstate travel, regional cooperation makes sense, governors across the U.S. believe.

In the Midwest, for example, seven states created a pact. There is a similar agreement in the Northeast, which has been a hot spot for coronavirus.