In 2016 Trump got 46.1% of the popular vote vs Hillary Clinton's 48.2%.
Expressed as fractions of the total US population in 2016:
- about 28.5% of the population was not eligible to vote (due to age or other reasons)
- about 31.6% of the population was eligible to vote but did not vote for either candidate
- about 20.4% of the population voted for Hillary Clinton
- about 19.5% of the population voted for Trump
If approx 1 in 5 is 'tiny' then support for the alternative was also 'tiny'.