The Conservatives are planning the "wholesale devolution of income tax" as part of their 2015 general election manifesto, the party's Scottish leader has said.
Ruth Davidson was speaking after the publication of a new report calling for the Scottish government to take on a range of new tax-raising powers that will bolster its standing relative to the UK Government in Westminster.
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Political leaders will go head-to-head at ITV's studios in MediaCityUK in Salford, ITV has confirmed, as the set for the event is unveiled.
More than 100 people claiming to represent working people across Britain have signed a letter backing Labour in the general election.
Nick Clegg has sent a campaign leaflet to his constituents with no Liberal Democrat logo and minimal mention of the party.