Flavio Bolsonaro maintains a commanding lead in Mato Grosso for first place in the presidential runoff because the state delivered him 65.15% of valid votes in the first round on October 4, compared with 29.18% for Lula, with victories in 133 of 142 municipalities. This outcome aligns with the region's longstanding support for the Liberal Party and bolsonarista positions, reinforced by consistent pre-election polling that showed double-digit advantages for the PL candidate among voters in agricultural and interior areas. The second round on October 25 will test whether these patterns hold amid national campaign dynamics. Late shifts in turnout among undecided or abstaining voters, targeted mobilization efforts by Lula's campaign, or unforeseen developments in the final days could narrow margins, though historical voting behavior in the state suggests limited scope for rapid reversal.