Boundary changes, which will likely make the Sydney seat of Bennelong more winnable by the Liberal Party, have triggered a push to replace the party’s existing candidate, 32-year-old Scott Yung.

A party source said Hunters Hill mayor Zac Miles has begun lobbying factional leaders to support them in Bennelong. Gisele Kapterian, the Liberal candidate for North Sydney, which is likely to be abolished, also considered running for the seat, but changed her mind over the weekend, according to another source.