She was an Alliance candidate again later that year, this time for the 2017 general election, running in Belfast West. She came 5th, with 731 votes, roughly maintaining Alliance's percentage share of the vote from the previous general election.[4]
She was elected in May 2019 as a councillor on Lisburn and Castlereagh City Council, representing the district electoral area of Castlereagh South. In that election, she topped the poll with 1,629 first preference votes and was elected on the first count.[5]
Later that year, she was the Alliance Party candidate for Lagan Valley in the 2019 UK general election, polling 28.8% of the vote (an increase of 17.7%), coming second behind the DUP incumbent Jeffrey Donaldson, while reducing his majority from 19,229 to 6,499.[6]
In 2020, Eastwood was awarded compensation after suing a former DUP councillor for accusing her of being an "IRA mouthpiece".[7]
Member of the Legislative Assembly (2022–2024)
Sorcha Eastwood, alongside David Honeyford, was an Alliance candidate for the 2022 Assembly election in Lagan Valley. She polled 8,211 first preference votes and was elected on the fourth count.[8] She took the seat formerly held by Alliance Party turned Independent MLATrevor Lunn, who did not run for re-election.[9]
On 8 June 2017, Eastwood married Dale Shirlow in Lisburn. With her wedding on the same day as the 2017 UK general election, Eastwood cast an election ballot in her wedding dress.[13]
In 2023, she publicly criticised Belfast City Hospital where her husband was being treated for a rare blood cancer.[14]