The campaign is launched: Here are the major issues of the British elections

With parliament officially dissolved and short visit of David Cameron to the Queen, the campaign for the parliamentary elections of May 7 is well and truly launched.

After five years of coalition between conservatives and Liberal Democrats, the UK is embarking on one of the closest elections in its history. No absolute majority should come out of this election if one believes the latest opinion polls.

The British voting system, first past the post in a turn, explains the often significant differences between the percentage of votes and the number of seats.

Thursday will be held on between the seven leaders of the main parties: the Conservatives, Labour, Liberal Democrats, Ukip, the Greens, the Scottish and Welsh nationalists SNP.

European Union

Labor, in any case, were quick to launch their offensive. It targets the referendum that the Conservatives have promised to hold the end of 2017 to an output of the European Union. The Labour has paid on Monday to explain that nothing would be worse for British companies that go out of the EU. "More than three million jobs in the UK are related to trade with the European Union", said the Labour Party.

Cameron, however, promised to defend the membership of the United Kingdom to the European Union. This is driven by the base of his party and in a strategic move against Brussels he took the initiative for this referendum.

The , as it is called now, however, is the real workhorse of Ukip, the Nationalist Party Nigel Farage.

Immigration

Annoyed by the record levels in the number of immigrants from the East after the membership of the ten former communist countries Union, many British voters want the European Union, especially in these times of economic scarcity, of tax burden, schools and hospitals where the shortage of places.

David Cameron promised to reduce the annual number of arrivals of tens of thousands ... But he always about .

Scotland

Scotland has asked loudly in national politics since the referendum - certainly missed - its independence last year. To be reckoned with SNP (Scottish National Party), who promised to "shake the elite of Westminster," and that could delight to forty parliamentary seats to the Labour Party, traditionally dominant in Scotland.

Not content with its explosion of popularity in the land of Loch Ness, the SNP now reaches out to all the British, the "ordinary people", and "progressive". Nicola Sturgeon, the leader of the SNP, incidentally promises to hold a referendum on independence for Scotland.