Scotland goes to polls on September 18 to decide whether it wants to remain part of the United Kingdom. The much-anticipated referendum could change the political and economic composition of the 300-year-old union.

The independence movement or the Yes campaign backed by the Scottish National Party will be pitted against the pro-union Better Together campaign supported by the Scotland's Labour Party, Conservative Party and the Liberal Democrats. For the first time in UK's polling history, Scots aged 16 and above will be eligible to vote. Everyone residing in Scotland can take part in the vote, including English and Welsh citizens. However, Scots living elsewhere in UK or overseas have no say in the decision 

As the vote looms, opinion polls suggest that both campaigns are neck-and-neck. If Scots do vote for independence, key issues to be resolved will be how oil revenues from the North Sea will be shared with the United Kingdom, how it will conduct its defence policy and the official currency.  Further, Scotland's membership to the European Union will also be at stake.