The SUP has contested elections including the Scottish Parliament elections in 1999, 2003, 2007 and 2011. In 2003, the SUP contested only the Glasgow, Central Scotland and West of ScotlandAdditional Members System electoral regions, yet failed to poll enough votes to elect any MSPs. It also contested only six local councilwards in 2003, all located in the west central belt where the traditional "Orange vote" resides. In one Glasgow city centre seat, they achieved third place. The SUP also stood for two seats at the 2001 general election, in Glasgow Springburn and Airdrie and Shotts. The party managed to retain its deposit in the former and almost did so in the latter. This was not so surprising in Springburn, for there was no Conservative and Unionist candidate since it was the constituency in which the Speaker, Michael Martin, was seeking re-election, but in Airdrie and Shotts, despite the presence of a Conservative and Unionist candidate, the SUP still managed to poll 4.5% of the vote. At the 2005 general election the party fielded its leader, Daniel Houston, in Glasgow North East against Speaker Martin again; Houston won 4.5% of the vote, almost enough to retain his deposit. The party failed to win any seats at the 2007 Scottish Parliament elections or the Scottish local elections held at the same time. According to the 2007 statement of accounts with the Electoral Commission the party has 128 members, which was up by 10 on the previous year though income from memberships fell from GBP 572 to GBP 365. It was deregistered by the Electoral Commission on 6 November 2009. However, the party appeared to have revived in 2012, when it ran a slate of candidates in the Glasgow Council elections, receiving 586 votes. It also fielded two candidates in the South Lanarkshire Council elections where their candidates received an average of 3.2% of the vote in the two wards it stood in.
Campaigns
The SUP campaigns against what it sees as anti-Protestant and anti-Unionistgovernment policies. The party is often strongly critical of mainstream parties that they view as failing to safeguard the Act of Union 1707, including the major pro-Union parties in Scotland. A number of its major policies are to:
End the present system of state funded Roman Catholic schools and work towards the creation of "multi-denominational" schools to cater to those of all faiths and none, in the belief that it will lead to greater social cohesion and an end to sectarianism.
Institute "zero tolerance" approaches to street crime, youth offences and drugs offences.
Significantly reduce immigration and have tighter border controls.
Youth wing
The Scottish Unionist Youth is the youth wing of the, formed in February 2007 at a meeting of the SUP, after discussions on the matter of forming a wing within the party specifically for young Scottish Unionists between the ages of 16 and 25. The SUY is involved with all aspects of political activism on behalf of the SUP. It is not known how many members the SUY has.