MPP's Executive Director Rob Kampia recently published his thoughts on how marijuana policy will factor into the 2016 presidential elections: The Marijuana Policy Project (MPP) recently released its quadrennial report card detailing the most prominent presidential candidates' positions on marijuana policy. To be sure, most voters aren't single-issue marijuana voters (on either side of the legalization issue). Most voters make their decisions after processing a soup of positions and paid ads. So MPP's…