It's all over bar the voting. Well, nearly all over.

By this time tomorrow voters in the south of Scotland, and across the country, will be heading to the ballot boxes to decide who forms the next Scottish government.

Opinion polls suggest the SNP will win another outright majority in the Scottish parliament - a parliament with a proportional election system once thought to make such an outcome impossible.

The polls also suggest the real electoral battle is for second and third place, between Labour and the Conservatives. And for fourth and fifth place, between the Liberal Democrats and the Greens.

Now polls have been wrong before, as we saw in the last UK general election, but the SNP has been consistently in the lead for at least 18 months.

And polling guru Professor John Curtice of Strathclyde University is quoted saying "the race for second place is now officially too close to call".Amid scepticism about polls, we should remember that Prof Curtice masterminded the UK election exit poll, which called the Tory majority correctly.

You can check out Prof Curtice's polling data on the What Scotland Thinks website here:http://whatscotlandthinks.org/opinion-polls

Scottish Conservatives leader Ruth Davidson Credit: Press Association

However, these are just polls and to alter a football cliche, it's votes in the ballot boxes that matter at the end of the day.

How will voters decide? What have been the key election battle grounds?First, there has been the issue of tax, with Holyrood about to gain the powers over income tax rates and bands.

The parties have offered a range of proposals, and some analysis out today by Professor John McLaren confirms voters have a big choice in this area.Economist Prof McLaren has handily listed the parties plans from high tax to low tax and finds that the socialist RISE group are the highest, with UKIP the lowest.

Based on party manifestos Labour's plan generates between £1.1 billion and £1.2 billion.

Scottish Labour leader Kezia Dugdale Credit: Press Association

The Greens come next, raising between £760 million to just over £1bn, the Lib Dems £505 to £605 million, the SNP on £290 million, and the Tories on £135 million.

On the key policy of who is putting most money into the NHS, Prof McLaren says "at first sight, the SNP's pledge appears to be the strongest".The Conservatives and the Lib Dems are "not far behind". He adds "the situation with the other parties is less clear".

Scottish Liberal Democrats leader Willie Rennie Credit: Press Association

You can draw your own conclusions from these facts on how radical the tax proposals and NHS spending plans are from each of the parties.

But beyond these specifics, and the other policies outlined in some detail the parties manifestos, there is a broader issue underlying this election.Scotland is still in what might be called a post-independence referendum phase of politics.

Most, if not all, of the people who backed a 'Yes' vote appear to be continuing to support the SNP, as the party of independence.

They see the Nationalists as standing up for Scotland, though of course their opponents dispute that and say continuing focus on a possible second referendum is destabilising.

Yet even if those who have stuck with the SNP may feel the party has not been as radical as it might have been - on tax for example - they appear to putting those reservations to one side, for now at least.

Which leaves the other parties fighting for what might be best described as the Unionist, or perhaps anti-independence vote. Hence the battle for places behind the SNP, if what the polls are suggesting is correct.

So that, in a very brief summary, is where we are in terms of the Scottish election.

In the course of the campaign I have interviewed all of the main party leaders for Representing Border about both the national and local issues for the south of Scotland.

If you have time you can see all of those interviews here. I hope they help you make your mind up.

David Coburn of UKIP:http://www.itv.com/news/border/update/2016-03-31/watch-representing-border-online-31-03-2016/

Greens leader Patrick Harvie is here:http://www.itv.com/news/border/update/2016-04-05/watch-tuesdays-representing-border-online/

Liberal Democrat leader Willie Rennie:http://www.itv.com/news/border/update/2016-04-11/watch-mondays-representing-border-online/

Tory leader Ruth Davidson:http://www.itv.com/news/border/update/2016-04-12/watch-tuesdays-representing-border-online/

Labour Kezia Dugdale:http://www.itv.com/news/border/update/2016-04-20/watch-wednesdays-representing-border-online/

Nicola Sturgeon, the SNP leader:http://www.itv.com/news/border/update/2016-04-26/watch-representing-border-online-26-04-16/