Voters are often uncertain about and biased against non-dominant political parties. By reducing the information gap with dominant parties, political advertising may thus disproportionately benefit non-dominant parties electorally. We test this argument in Mexico, where three main parties...

Sex workers and their clients are particularly vulnerable to HIV/STI transmission. Most research on condom use has focused on barriers preventing use; less is known about attitudes, motivations and strategies employed by those who feel positively about condoms and who use them successfully. For...