Wolfe joined the SNP in 1959. Having swung his support behind the ‘
It's Scotland's oil’ campaign that changed the party's fortunes, he associated the SNP with the trade union campaigns against
shipyard and other industrial closures and asserted its role as a radical participant in Scottish politics. Wolfe was instrumental in identifying publicly the
social democratic,
left-of-centre credentials of the SNP. It was during Wolfe's period as leader that the party had considerable electoral success in elections to the
Westminster parliament, winning 30% of the vote in Scotland and
11 of the 71 Scottish seats in the
October 1974 General Election, though Wolfe failed to win a seat of his own in West Lothian in the two general elections of that year, despite gaining an increased share of the vote. In both instances the SNP's National Executive Committee disowned Wolfe's statements, causing Wolfe to withdraw his candidacy from that year's election for the office of party president. Wolfe later apologised for his remarks, saying "I ask for forgiveness of those whom I hurt, if they understand me now. I can see myself then as others saw me ... I don't know why I did it". His second wife, Kate McAteer, was a practising
Roman Catholic. ==Personal life==