Updated

As the campaign for Austrian general elections enters its grueling final phase, two high-profile contenders have gone beyond rolling up their shirt sleeves: They've taken off their shirts.

Posing bare-chested is the newest twist on the rivalry between populist candidate Frank Stronach and Heinz-Christian Strache, who heads the anti-immigrant and EU-skeptic Freedom Party, as the two compete for the protest vote ahead of the Sept. 29 elections.

Stronach was first to doff his shirt, revealing a trim 80-year-old upper body in photos showing him wearing only jeans and a smile during weekend interviews with Austrian dailies.

Strache was close behind. A photo of the tanned and athletic 42-year-old clad in swimming trunks first appeared on his Facebook page Sunday, with the caption "top fit in the election campaign!"