Remember, the USA is an imperialist superpower. To paraphrase British folk singer Billy Bragg, when we elect a president, we don't just elect a president for us, we elect one for the whole world. A world that, with the exception of that 2.5 percent, has no say whatsoever in whom becomes president.
The late, unlamented apartheid regime in South Africa was loudly and rightly condemned as unfree. The government that ruled there was rightly seen as illegitimate. That government's policies restricted voting to those classified as "whites" -- who comprised from 10 to 15 percent of the population at the time.
Let's assume that half of those white South Africans voted regularly. Pay attention now: Half of 10 is 5. 5 is more than twice 2. This means that apartheid-era South Africa was over twice as democratic and twice as legitimate as the current US-dominated system of global imperialism is!
[Adapted from THINGS TO KEEP IN MIND AFTER THE ELECTION, posted several days earlier.]