After a period living in
Australia, Kerr returned to Scotland and worked as press officer to
Tommy Sheridan MSP. In the May
2003 Scottish Parliamentary election, Kerr stood as an SSP candidate for the
East Lothian constituency but gained only 1,380 votes (4.42%). Kerr was no. 3 on the SSP's list of candidates at the June
2004 European Parliamentary Election, but it did not get any candidates elected. His share of the vote at the
Kilmarnock and Loudoun constituency in the
2005 general election slumped to 1.9% (833 votes). Kerr resigned from the SSP in September 2006 to become the Press Officer of
Solidarity, a new party led by Sheridan, but left the party in 2011 to join the
Scottish National Party (SNP). He sought the SNP nomination in Kilmarnock and Loudoun in the
2015 general election but was unsuccessful in being selected. Kerr resigned from the SNP in 2016, in protest against party leader
Nicola Sturgeon holding a copy of the
Scottish Sun newspaper. On 11 December 2019, one day before the UK general election, Kerr pleaded to the Scottish people to vote tactically for the SNP to “keep the Tories out of power”. He was a defence witness in
HM Advocate v Sheridan and Sheridan. He currently writes on opera for Scottish arts website
The Wee Review. In March 2021 he joined the
Alba Party. In 2025 he left Alba to join
Jeremy Corbyn and
Zarah Sultana's
Your Party, describing Alba as a "dying" party "in its death throes" after it split over candidate selection and a police investigation into financial misconduct. Kerr noted that Your Party was his eighth party since joining Labour in 1959, but said this may be his last. He quit the party just four months later. ==References==