Yes we can! Valence politics and electoral choice in America, 2008

The claim that the 2008 presidential election was a transformative one is fast becoming part of the conventional wisdom of American politics. Despite the election’s undoubted significance, this paper argues that factors affecting voting decisions were strikingly similar to those operating in many previous presidential elections. Using data from the CCAP six-wave national election survey, we demonstrate that a valence politics model provides a powerful, parsimonious explanation of the ballot decisions Americans made in 2008. As is typical in presidential elections, candidate images had major effects on electoral choice. Controlling for several other relevant factors, racial attitudes were strongly associated with how voters reacted to the candidates. Other models of electoral choice, such as a Downsian issue-proximity model, are also relevant, but their explanatory power is considerably less than that provided by the valence politics model.     

Microcrystal analysis of cocaine hydrochloride and added adulterants

The objective of this project was to investigate the trends of changes in the crystal morphology of cocaine in the presence of the common adulterants, caffeine and lidocaine HCl. By performing gold chloride microcrystal tests on samples of cocaine with adulterants at 10, 20, and 50% concentrations, trends in the changes of the crystal morphology can be linked to specific adulterants and concentrations. For cocaine/caffeine mixtures, the trend is elongation of one axis, additional branching, and brown discoloration of the crystals. At 50:50 cocaine/caffeine mixtures, branched spherical crystals and long needles appear. The trends for cocaine/lidocaine mixtures include elongation of one axis with an X-shaped middle axis. The axes continue to grow and branching decreases until at 50%, spherical clusters of needles appear. These results indicate microcrystal analysis can be used as a novel method for presumptively identifying not only cocaine but also the identity and concentration of the adulterant.