The Democrats would win in a landslide. The UK might be one of the more right-wing countries in Europe, but it's not that right-wing to support the GOP on any level.
They would run against the Democrats, the Democrats would be radioactive level of toxic outside the USA.
Depends on the climate. In a year like 2016 it's possible that the Republicans might look better towards the average European, but I don't think that necessarily applies to 2020 (though o/c they would be having serious problems now). And from 1992-2012 it basically would've been years of big Democratic wins as the Republicans message was a lot more traditionally right-wing and the Dems not as "woke".I’m talking about the modern Democrats, yes the Democrats of the past would be more competitive, but I would also say the rot started before 2012. The Democrats weakness outside the major metropolitan areas, their focus on minority interest, their hostility toward the WWC and to much smaller extent their wokeness would significant weaken them in countries with relative small minorities, strong regional identities and a left heavy depending on the WWC.