The crowded field of 13 registered candidates for Roraima’s two Federal Senate seats, with filings closing August 15, keeps first-place probabilities tightly clustered as no contender has consolidated broad support in the small-state electorate. Incumbent Chico Rodrigues and other established names such as Rogério Miranda and Helio Bolsonaro compete alongside lesser-known challengers, producing a fragmented vote that historically rewards local name recognition and party machinery rather than national coattails. With the October 4 election still weeks away and limited recent polling available, traders price the outcome near even odds across leading options while awaiting campaign events or alliances that could narrow the field.