Here is the chart of the day from LAPOP. It's especially notable because there are plenty of corruption measures, but it's much less common to ask people how much they think their government is doing to combat it.
What you immediately see is that ideology is not relevant. In fact, having Nicaragua at the top of the list is surprising, given how famous and brazen Daniel Ortega's corruption is. But clearly Nicaraguans view it in a different context, comparing the situation to other governments, for example. That context--the one much less visible from the outside--matters a lot.
And take a look at the United States. That's just embarrassing, but it's a post-crash reality.