ACCORDING to the opinion polls, the Conservatives have a 21 per cent lead in the general elections scheduled for May 3. All they need to achieve a majority in the House of Commons is a four per cent lead over the Labour Party throughout the country. The lead that the polls give the Tories is tantamount to a Tory majority of 200 in the House. The main issues in the forthcoming election are waffle. The Tories have declared themselves for 'freedom'; the Labour Party for 'fairness and justice'.