UK elections 2015
http://www.bbc.co.uk/news/election/2015
Thursday 7 May (last election: 6 May 2010)
There will be 650 seats (=all) in the UK Parliament's House of Commons up for grabs.
The House of Lords includes two different types of members: the Lords Spiritual (the senior bishops of the Church of England) and the Lords Temporal (members of the Peerage) whose members are not elected by the population at large, but are appointed by the Sovereign on the advice of the Prime Minister. (Wikipedia)
Source: Election 2015: Leaders prepare for live debate
Polls
Source: http://www.bbc.co.uk/news/election-2015-31712045
FiveThirtyEight U.K. General Election Predictions
Issues
Policy guide: Where the parties stand
Most important issues for young voters