While voting the selected button is almost not visible (+ css quick-fix)
While voting on a new polity, the selected Active button "Yes" "Abstain" "No" will be changed to "btn.active" style class(css) and there the only change is a light gray border that is almost non visible in poor quality or bright screens.
A quick solution would be to change the css active background style btn.active to a new color.(though keep in mind having it coherent with other styles of the page.) even a shade of light gray would show the selction better.
as refference: #644f80 is to my belief the rgb equalent purple color used in the current theme only a minor non'noticable solution is to use a light-gray value: like #cfcfcf would still enhance the viabillity.
//Web safe color of #e6e6e6 is (#ffffff +lightness value 0.9) basicly white. //no idea how the IE /9 hack works as i dont use IE8 and below. (or above)...
[https://x.piratar.is/static/css/bootstrap.css] line : 3125 .btn.active, .btn:active { background-color: #e6e6e6; background-color: #d9d9d9 \9; ..... .... }