States with similar presidential preferences to Montana

1. North Dakota, 2. South Dakota, 3. Alaska, 4. Oklahoma, 5. Kansas

States with similar presidential preferences to North Dakota

1. Oklahoma, 2. South Dakota, 3. Wyoming, 4. Kansas, 5. Nebraska

States with similar presidential preferences to Indiana

1. Oklahoma, 2. North Dakota, 3. Kansas, 4. Wyoming, 5. South Dakota

States with similar presidential preferences to Colorado

1. Colorado, 2. Nevada, 3. Indiana, 4. New Hampshire, 5. New Mexico

States with similar presidential preferences to Idaho

1. Utah, 2. Alaska, 3. Nebraska, 4. Kansas, 5. Wyoming

States with similar presidential preferences to South Dakota

1. North Dakota, 2. Oklahoma, 3. Kansas, 4. Wyoming, 5. Nebraska

States with similar presidential preferences to Utah

1. Idaho, 2. Alaska, 3. Nebraska, 4. Kansas, 5. Wyoming

States with similar presidential preferences to Wyoming

1. Nebraska, 2. Kansas, 3. Oklahoma, 4. Utah, 5. Idaho

The Most Similar States to the Rocky Mountain Region

1. Wyoming, 2. Idaho, 3. Montana, 4. Colorado, 5. Utah