By Scott Stewart Mexico will hold its presidential election July 1 against the backdrop of a protracted war against criminal cartels in the country. Former President Vicente Fox of the National Action Party (PAN) launched that struggle; his successor, Felipe Calderon, also of the PAN, greatly expanded it. While many Mexicans apparently support action against the cartels, the Calderon government has come under much criticism for its pursuit of the cartels, contributing to Calderon's low popularity at the moment. The PAN is widely expected to lose in July to the Institutional Revolutionary Party (PRI), which controlled the Mexican presidency for most of the 20th century until Fox's victory in 2000. According to polls, the PAN has lost credibility among many Mexican voters, many of whom also once again view the PRI as a viable alternative.