Incumbent Sen. Mark Warner commands 99% trader consensus as the presumptive Democratic nominee for Virginia's U.S. Senate primary on August 4, following the April 2 filing deadline where he was the only candidate to submit sufficient verified signatures—over 18,000—for ballot access. His early campaign launch in March, bolstered by strong incumbency advantages, fundraising dominance, and party backing, deterred serious challengers despite earlier interest from progressive Jason Reynolds. Traders price Reynolds at under 1% due to his failure to qualify, reflecting high barriers like signature thresholds. Realistic shifts would require Warner's disqualification via legal challenge or an improbable write-in surge, though historical primary precedents favor unopposed incumbents.