Hours ahead of the Scottish referendum on independence, the fate of the 307-year-old union between Scotland and Britain now rests in the hands of the undecided voters, as latest opinion polls indicate a very tight fight between the"No" and the "Yes" camps.

Registered Scottish voters will line up at neighborhood polling stations from 0600 GMT to 2100 GMT on Thursday to decide whether to secede from the United Kingdom or to remain in the centuries-old union.

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From Glasgow to the Highland ridges, voters will be asked a straightforward question: "Should Scotland be an independent country?"

The newest poll results released over the weekend suggest that the pro-union camp is ahead only by a few points from the separatists campaigning for Scottish independence.

Five separate polls from Survation, Panelbase, YouGov, ICM and Opinium all show two to four percent margins between the pro-independence at 48 percent and the pro-UK camp at 52 percent.

This trend was confirmed by the Wednesday poll released by Panelbase which gave unionists 52 percent support and support for Scotland's independence at 48 percent.

Another poll published by the Ipsos MORI on Wednesday afternoon showed an even closer gap with pro-UK getting 51 percent against the pro-independence camp's 49 percent.

All the said polls exclude the undecided voters who, according to Reuters, could be more than half a million voters.

Across Scotland, mass rallies and campaigns have been held to sway the undecided voters to favor either side of the independence debate.

Wednesday has seen the most intense campaigning yet, with leaders of both sides scouring all of Scotland-from the cities to its rocky coasts-looking for any advantage on the eve of the referendum that could split the United Kingdom apart.

This is an opportunity of a lifetime, said Alex Salmond, the leading figure in the campaign to break away from the United Kingdom.

In a last-ditch effort to plead with Scotland to vote against independence, major political leaders including Labour Party leader Ed Miliband and Conservative Party leader Prime Minister David Cameron along with artists and celebrities united to plead with Scotland for a "Better Together" UK. 

TagsScottish independence, Scotland independence referendum, scotland's independence, Scotland referendum for independence