I split the up/down voting buttons to have one above the votes count and one below. When voting up, the down button becomes disabled but doesn't disappear like normal. Just thought you'd like to know.
Each button is in a duplicated wrapper element. Here is the HTML that is generated for the page:
<div class="qa-voting qa-voting-net" id="voting_19200">
<div class="qa-vote-buttons qa-vote-buttons-net">
<input title="Click to vote up" name="vote_19200_1_a19200" onclick="return qa_vote_click(this);" type="submit" value="+" class="qa-vote-first-button qa-vote-up-button" onmouseover="this.className='qa-vote-first-button qa-vote-up-hover';" onmouseout="this.className='qa-vote-first-button qa-vote-up-button';">
</div>
<div class="qa-vote-count qa-vote-count-net">
<span class="qa-netvote-count">
<span class="qa-netvote-count-data">3<span class="votes-up"><span class="value-title" title="3"></span></span><span class="votes-down"><span class="value-title" title="0"></span></span></span><span class="qa-netvote-count-pad"> votes</span>
</span>
</div>
<div class="qa-vote-buttons qa-vote-buttons-net">
<input title="Click to vote down" name="vote_19200_-1_a19200" onclick="return qa_vote_click(this);" type="submit" value="–" class="qa-vote-second-button qa-vote-down-button" onmouseover="this.className='qa-vote-second-button qa-vote-down-hover';" onmouseout="this.className='qa-vote-second-button qa-vote-down-button';">
</div>
<div class="qa-vote-clear"></div>
</div>