The Brazilian presidential campaign is now officially underway, with candidates holding rallies, attending debates, and preparing their television and radio spots. Now, more than ever, polls will play a big part in the candidates’ strategies – and they will also influence the press, the markets, and political pundits. Some institutes have set themselves apart from the rest over the years and, thanks to methodological evolutions, the main pollsters tend to publish similar numbers as Election Day draws closer. However, important differences in how questions are formulated (or how the voters are approached) remain.
Last week,...
