The resignation of Sam Groth, a former professional tennis player turned politician, has ignited a fierce internal struggle within the Victorian Liberal Party as they prepare for a byelection in Nepean. Groth, who initially intended to step away from political life at the upcoming election in November, expedited his departure last week, prompting a race to find his successor that has raised significant concerns among local party members.
Party Executive Bypasses Local Branch
In a move that has left many local branch members feeling sidelined, the majority of the Liberal Party’s state executive has opted to endorse Anthony Marsh, the current mayor of Mornington Peninsula, as Groth’s successor. This decision will be confirmed in a vote scheduled for 24 February, with Marsh’s nomination coming just after he joined the party on 10 February. His rapid ascension has prompted criticism, especially considering the party’s usual requirement for a 12-month membership before seeking preselection.
Local party members will not have the opportunity to vote on this critical decision, as the selection will be made by an 18-member state executive along with six members of the local Nepean executive. This has sparked dissatisfaction among the rank and file, who feel their voices are being ignored in a process that should involve grassroots participation.
Anthony Marsh’s Local Ties and Aspirations
Marsh has publicly expressed his commitment to the Nepean community, citing his long-standing connections to the area. “I went to school here, have lived here, built my business serving local clients, and have worked and represented this community over many years,” he stated. His candidacy is bolstered by a notable victory in the recent local government elections, where he secured 70.43% of first-preference votes in his ward, defeating an independent challenger.

Despite this local backing, frustrations remain high within the party. Critics have pointed out that bypassing the local branch’s input is not ideal, especially given the urgency stemming from Groth’s abrupt resignation. Some party members argue that the absence of a plebiscite could undermine the party’s grassroots connections, particularly as competing parties and independents prepare to contest the seat.
A Safe Seat Under Threat
Nepean is regarded as a secure Liberal seat, boasting a margin of 6.4%. However, the political landscape is shifting, with One Nation confirming plans to field a candidate and Independents for Mornington Peninsula actively searching for a contender. The Labor Party, traditionally a significant opponent, is expected to abstain from contesting in this byelection, having refrained from running in seats they do not currently hold for over twenty years.
The upcoming byelection represents a crucial test for the newly appointed Liberal leader, Jess Wilson. Since taking over the leadership following a successful spill against Brad Battin in November, Wilson has pledged to unite the party and address the internal divisions that have been exacerbated by Groth’s resignation.
Why it Matters
The Nepean byelection is more than just a contest for a parliamentary seat; it reflects broader tensions within the Victorian Liberal Party and raises questions about candidate selection and local representation. The decision to bypass local branches in favour of a state executive endorsement signals a potential shift in party dynamics, which could alienate grassroots supporters. As electoral challengers emerge, the stakes are high for the Liberals, who must navigate these internal conflicts while striving to retain a seat that has long been a cornerstone of their political strength.
