Blue-ribbon and blue voting: Australia’s five richest electorates in terms of property prices are all safe Liberal seats.

Median house prices into the millions of dollars are commonplace in these areas, mostly in New South Wales and Victoria.

Prime Minister Malcolm Turnbull’s own seat of Wentworth, including the suburbs Point Piper and Vaucluse, boasts the highest median house prices in the country, where homes are worth about $2.5 million dollars, a new data analysis from the Domain Group shows.

Turnbull’s own waterfront Point Piper estate has been speculated to be worth as much as $52 million.

Property has shaped up to be one of the key election battlegrounds in this campaign, with negative gearing a top issue.

The NSW seats of Warringah, which includes the suburbs Mosman and Manly, and the seat of North Sydney, which includes Lane Cove and Willoughby, are blue ribbon Liberal seats and have medians also above $2 million.

The northern seat of Bradfield, which includes suburbs such as Killara and Wahroonga, has a median of $1,890,000 and is one of the safest Coalition seats in the country, with a margin of 20.9 per cent.

Homeowners in Kooyong in Melbourne’s east, a seat which includes Hawthorn and Camberwell, have median house values of $2 million, the highest in Victoria. Local member Josh Frydenberg sits on a margin of 11.1 per cent.

Overall, NSW had the highest numbers in the list of Australia’s 30 richest electorates by house prices, with 19 electorates making the cut.

Victoria had nine entrants in the top 30. Besides Kooyong, the seat of Higgins, which includes Prahran and South Yarra within its borders, was also notably in the top 10.

Higgins has been a Liberal-held seat since its creation, but it is now widely speculated to be at risk of swinging to the Greens.

Queensland and WA had one electorate each in the top 30, with Moncrieff, the electorate that contains Surfers Paradise, and Curtin, which includes Perth’s most expensive suburb Peppermint Grove, respectively rounded out the list.

The Liberals hold 18 of Australia’s richest property seats, while the ALP have 10, and the Greens and the nationals each have one in the top 30.

Domain Group chief economist Andrew Wilson said there was no doubt the data showed higher priced electorates follow conservative patterns.

“There has been a strong period of growth in Sydney and Melbourne since the last election, but I’m not quite sure voters will see house prices as the responsibility of their local members,” Dr Wilson said.

He said the resource states had been weaker in comparison.