Specifically, I'm wondering if there exist instances for either side where the government unambiguously enjoys consistently high popular (domestic) and international approval, including from at least a significant part of the opposition.

I'd like to point out that I don't consider however many people either side managed to sway throughout time, or however many governments they came to rule throughout history relevant as a measure of success.

Edit: In other words, what I definitely DON'T mean by success is the ability of rhetoric from either leaning to convince voters. I mean the successful performance of a government in real, quality of life terms.