Hey guys, I work in this field so I'd thought I'd give you guys some pointers.
1. Go for COST PER 1K IMPRESSION (CPM). If your ad is not getting clicks per 1k views, try changing it and making it more eye candy. If still no go, then use cost per click (CPC).
2. Make the ad catchy, and make sure if your ad is based on Ron Paul, put a current image of him so people can easily identify.
3. For demographics, go for South Carolina and people over the age of 35 (and add an upper limit of 64). We REALLY need older people for this as Ron Paul gets crushed in that demographic. It's harder to convince old people.
4. Link to strong conservative videos on YouTube since it's very neo con. Also link them to "You like Ron Paul but on foreign policy" here:
http://www.youtube.com/watch?v=d8RAog2RnRc (How did million view get taken down? Argh).
5. SPREAD THIS TO EVERYONE! This is an amazing way to get the message out. Tell every Ron Paul supporter on Facebook. The advantage we have over the other candidates is that we have true supporters who will do anything to get Ron Paul elected. We can get millions of views a day!