This political realignment was particularly noticeable at the 2019 Australian federal election as blue-collar but highly paid mining workers deserted Labor for Pauline Hanson's One Nation and the Coalition.
[1] Similar voting trends can be found in the nearby electorates of Flynn, Dawson, and Leichhardt.
On its current boundaries it also includes the town of Yeppoon and Ooralea, Marian and Sarina, all southern suburbs of Mackay.
Even after Gladstone was redistributed to Hinkler in 1984 (it is now part of Flynn), it remained one of the few non-metropolitan seats where Labor consistently did well.
Capricornia is currently held by Michelle Landry for the Liberal National Party who in 2016, became the first conservative MP to serve more than one term in the seat since George Pearce.