Market A questions whether the Federal Reserve will cut interest rates by 50 basis points or more following the April 2026 policy meeting—a specific, near-term monetary event with major global implications. Market B asks whether Aldo Rebelo will secure victory in Brazil's 2026 presidential election, a geopolitical outcome unfolding over the entire year. While these markets operate in entirely separate domains—US central banking versus Brazilian electoral politics—both currently trading at 0% probability reflect a shared characteristic: trader conviction that these outcomes are exceptionally unlikely. The contrast illustrates how market probability can converge at zero for fundamentally different reasons: Federal Reserve policy follows predictable communication patterns and recent tightening, while Rebelo faces apparent structural barriers in his presidential bid. The 0% price on both markets conveys extreme market certainty, but the mechanisms differ sharply. For the Fed market, 0% YES reflects forward-guidance expectations: current inflation levels and recent Federal Communications suggest further tightening or a pause, not an aggressive 50+ bp cut within a single month. A 50 bp cut would represent a dramatic policy reversal—something markets price as nearly impossible given the Fed's communication discipline and typical adjustment pace. For Rebelo's candidacy, 0% YES likely reflects either marginal polling numbers, late entry into the race, or perceived electability barriers, meaning traders see minimal path to victory regardless of campaign developments. These markets are structurally independent: Brazilian election outcomes do not directly determine Fed policy, nor vice versa. However, indirect links exist through capital flows and sentiment. If Rebelo's campaign unexpectedly gained traction, Brazilian asset uncertainty could emerge, potentially creating headwinds if contagion spread—though this remains speculative. More plausibly, both outcomes stay decoupled; Fed policy and Brazilian elections will follow their own trajectories with minimal feedback loops. A shift in either 0% probability would likely occur independently, driven by market-specific events rather than cross-market influence. For the Fed market, watch Consumer Price Index trends and employment data in weeks preceding April, along with official communications hinting at rate-cut readiness—a sustained retreat in inflation could move this market off zero, though 50+ bps remains a high bar. For Rebelo's election, monitor polling trends, campaign announcements, and voter sentiment surveys specific to Brazilian politics. A breakthrough in either domain could shift probability; until then, the 0% pricing reflects the market's assessment that conditions for each outcome remain absent.