 Though Fox's victory was due in part to popular discontent with decades of unchallenged PRI hegemony, also, Fox's opponent, president Zedillo, conceded defeat on the night of the election—a first in Mexican history.A further sign of the quickening of Mexican democracy was the fact that PAN failed to win a majority in both chambers of Congress—a situation that prevented Fox from implementing his reform pledges.Nonetheless, the transfer of power in 2000 was quick and peaceful.