[1] The current MP is Chris Bowen, a member of the Australian Labor Party.

The division was established in 2010 and is named in honour of former Australian Prime Minister Sir William McMahon.

Common ancestries in McMahon include Assyrian, Iraqi, Chinese, and Italian Australians.

[4] In the most recent election, Labor performed best in Fairfield, an ethnic enclave of Assyrians, while the Liberal Party did best in the rural precincts of Kemps Creek and Horsley Park in the west.

Other languages spoken at home include Arabic 12.8%, Vietnamese 4.8%, Assyrian Neo-Aramaic 4.1%, Spanish 2.1% and Mandarin 2.1%.