David Cameron is to tell voters they face a "stark choice" between him and Labour's Ed Miliband
as the election campaign officially gets under way.
The PM will visit the Queen for a final audience ahead of the 7 May poll, formally marking the end of the five-year coalition government.
Later, he is expected to say the UK is on the "right track" and a Labour government would be "economic chaos".
Mr Miliband will say the Conservatives pose a clear "danger" to UK firms.
Setting out Labour's policies on business, he is expected to warn that the PM's promise of a referendum on Britain's EU membership also risks an "extraordinary loss of British influence".
Following months of unofficial campaigning, the five-and-a-half week race for No 10 begins in earnest after Parliament was dissolved under the terms of the Fixed Term Parliaments Act.
http://www.bbc.com/news/election-2015-32109172