Keith Humphreys compares Romney's and Paul's 2008 campaigns to their 2012 campaigns:
The chart [above] presents the percent change in number of votes received by Paul and Romney in each of the nine states that have so far voted. The comparison with Paul make Romney’s 2012 run look even less impressive than it does already. Paul’s growth in number of votes from 2008 to 2012 beats Romney’s in all states, and in no case did he decrease his number of votes (his smallest gain was 1.5% in Nevada). In states where a generic factor helped all the candidates net a higher absolute number of votes, for example South Carolina’s 35% higher turnout in 2012 than in 2008, the bump Romney got in relative performance still lagged Paul’s. And Romney’s post-Florida run of decreasing his absolute number of voters from 2008 to 2012 — which he extended today in Maine — can’t be blamed on generic external factors: Ron Paul increased his vote totals in all five of those states.
The Dish 
