It may be easier. But that's not why.
If you avoid politicized language, a large majority of the US is quite left leaning, and economically progressive.
One of the Republicans favorite things to hate is the ACA (Obama Care). But if you ask them about the individual policies in the ACA, they approve of each of them by at least 2/3rds. And nearly all agree that the government should prevent people from being forced into bankruptcy by medical expenses.
The Dems just don't know how to speak to people like Republicans do. They could do it. But they don't.
Rather than speaking to peoples pain and anger, they try to lecture and teach. You need to talk to people where they are not where you want them to be.
Bernie does it. That's why so many Trump supporters like him, when they don't like the rest of the Dems.