<P> Eduardo Frei Montalva Christian Democratic </P> <P> Salvador Allende Socialist </P> <P> Presidential elections were held in Chile on 4 September 1970 . Salvador Allende of the Popular Unity alliance won a narrow plurality in the public vote, before having his victory confirmed by a Congressional vote after the Christian Democrats voted in favour of his candidacy . </P> <P> Eduardo Frei Montalva and his Christian Democratic Party would later unite with Allende's opponents to form a congressional majority in an attempt to declare his presidency illegal in August 1973, catalyzing the Chilean coup of 1973 a few weeks later . </P>

Who was elected the president of chile in 1970