In those cases, the most conservative figure of one was used to calculate the percentages in this graph. (idra.org)
I suspect this indicates rather more about the lack of public knowledge of senior Conservative figures than anything else. (ukpollingreport.co.uk)
Please note: the figures presented here are usually the more conservative figures people have presented, but the date of our eBook # 25,000 was said to have been slightly earlier than reported. (gutenbergnews.org)