Over the last decade there has been a substantial move from Labour and the Lib Dems to the separatist and Marxist SNP in Scotland. However, it appears such moves have not been replicated in other parts of the UK. For example, Northern Ireland.
A poll strongly indicates voters in Northern Ireland would reject a united Ireland in a border poll.
The poll found, not surprisingly, more than 90% of those who identify themselves as Protestants said they wanted to stay in the UK. But on the other side of the religious divide, a substantial 38% of Catholics also favoured remaining within the UK – three percentage points more than the number who backed a united Ireland.
In recent times there has been greater support amongst Catholics for the Unionism. More than half of SDLP supporters – 56% – also said they would opt to stay in the UK. Those who identified themselves as Sinn Fein voters – 23% – said they would back the status quo in a border poll.
The BBC poll states 'those who identified themselves as "Northern Irish" for the BBC Spotlight poll those people back staying in the UK by a significant margin – 72% to just 7%.'
Electorally, since 2007 power in the Northern Ireland Executive has been shared between two parties traditionally considered it be on the more extreme wings of ‘Unionism’ and ‘Republicanism’ – the Democratic Unionist Party (DUP) and Sinn Fein (SF)
Votes in national elections generally yield a percentage of around 47-50% for Unionist parties, and around 40% for Republicans and the remaining 10% non-aligned. (Alliance)
Also, one must factor in there is large elements of tactical voting, for example large numbers of Unionists vote SDLP in South Down to stop Sein Fein getting elected.
In the 2015 General Election Unionists to include Sylvia Hermon MP for North down, took 11 of the 18 seats leaving the Republicans with 7. There were two gains for Unionists in Fermanagh and South, from Sein Fein and Belfast East went DUP from the Alliance Party.