The economy had recovered vigorously from the 1962-63 recession, and this only seemed to deprive voters and the media of a distraction away from speculation as to what steps Perón might take next to return to Argentina.
Bramuglia died in 1962; but the failure of one such alliance in 1963 provided Popular Union supporters with their first realistic chance to represent the aging leader.
The adoption of the UP mantle by Steelworkers' leader Augusto Vandor defied Perón's call for open conflict with the Illia administration, moreover.
Vandor's very prominence made him the UP's paramount figure, and by extension, the first viable Peronist alternative to Perón in the movement's twenty years of existence.
Former President Pedro Aramburu's anti-peronist UDELPA benefited even less from Perón's barely thwarted return, and they lost half their 14 seats.