Audience feedback - images

I asked my audience which of the above images they though would be the best for a front cover, these were the results:

(from top to bottom)

1st image:

2nd Image: 5

3rd Image: 8

4th image: 4

5th image: 6

6th image: 3

7th image: 2

8th image: 4

9th image: 3

My audience feedback shows that the most popular image for a front cover would be image 3. I will use this image as it was popular to my target audience.