The move is part of Jeremy Corbyn's plan to "transform" the UK into a low carbon, green economy.
Labour wants to build 100,000 new council houses a year, while the Tories vow more help for first-time buyers.
The PM says he will raise the threshold next year so people do not have to pay until they earn £9,500.
The party thinks it can achieve its aim of stopping Brexit if there is no outright winner on 12 December.
Jo Swinson releases details of her election pledges and Boris Johnson reveals a National Insurance cut.
It's the off the cuff comments that are often the most interesting, writes the BBC's Nick Eardley.
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