RMT's ballot in defence of the London Bridge 3 is our first taste of organising industrial action since the Tories' new anti-union law - the Trade Union Act - came into effect in March. The law means voter turnout must be over 50%. In 'important public services', such as the Tube, there is an additional requirement that over 40% of the people balloted must have voted 'yes' in order for our ballot result to be 'legal'. So we need a 'yes' vote that is strong enough to meet - and beat - these new thresholds. Vote yes!