I'm using the simple poll in a column and I want to achieve this view which I did in Firebug.

<div class="ap-bar poll-bar" ap-wratio="1" style="width: 30px; display: block;"></div>

i.e. the width is 30px

Otherwise the green bar is only ever about a pixel or two wide. Where do I change the code?

Thanks.

No, you can't assign a fixed width to a poll bar. The width of a bar should be variable so the script can animate it.