The top five vote-getters will advance.
And it’s Isaac Asimov with 100% of the vote! I win!
Not this time bucko!
Welles.
Orson or Tori?
Ha-frikkin-Ha.:dubious:
Hey, who am I to judge your private life? 
Clarke, because his imagination actually changed the world.
Hard to choose between Heinlein, Clarke and Asimov but Heinlein wins if only because of The Moon is a Harsh Mistress.
Yes, I know that Sir Arthur created the concept of geosynch orbits.
Nevertheless, I still like Robert’s writing better.
Dick.
Don’t be mean.
Heinlein, of course.
That’s Phillip K. Richard to you, bucky.
Tough choice, but I had to go with Heinlein.
Why can their be only one?
As it stands right now, my man, Jack Vance, would actually make the top five. Which somewhat surprises me.
Because greatest is the superlative form of the adjective. Personally, I don’t feel that the issue is resolvable. Heinlein, Clarke and Asimov are the three greatest; all others pale by comparison. However, to choose any one of them above the other two as being the greatest of the three is an impossible distinction to qualify.
While I didn’t vote for him, and he is my favorite author, I’m glad to see that so far, Roger Zelazny is in the top 5.
It’s not that so much as all the beheadings that bothers me.
Asimov has pulled ahead of Heinlein-I no longer sense a disturbance in the Force.
I really wanted to vote for Bester . . . but I went with Heinlein simply because he was more prolific. And that criterion almost made me pick Asimov, but quality-over-quantity kicked the ball back at Heinlein.
Oh c’mon!
War of the Worlds?
The Time Machine?
The Island of Dr. Moreau?
The First Men in the Moon?
The Invisible Man?
How could it not be H.G. Wells?