These two are, arguably, the two most successful people in the band, with each of them putting out incredibly successful albums.
Harry has, to date, released two albums, with the second becoming a huge hit and even gaining a nomination for Album of the Year at the BRIT Awards.
Zayn also has two albums out, however his first album was greatly more successful than the second, and he did not tour very much at all given to what has been called stage-fright by some of his bandmates.
The third place singer in the group was named as Louis Tomlinson, who gained nine percent of the vote.
He has released music since leaving the band, however mainly he has become known for his work as a judge on The X Factor.
source: express.co.uk