Despite the fun nature of this idea, I want something simple and traditional so that it will get through the Australian Electoral Commission application process.
These are the criteria it has to meet:
Format and submission of logo
A party's logo must meet the following requirements as set out in the Commonwealth
Electoral (Logo Requirements) Determination
2016:
•         be a vector graphic in electronic format
•         be 100% black in a CMYK (Cyan-Magenta-Yellow-Black) colour space
•         be contained within a frame of 10 mm by 10 mm
•         be able to be reproduced correctly within a frame of 7 mm by 7 mm
•         not include these features:
o    live text
o    transparency or overprinting
o    custom halftone, transfer curve or colour profile settings
•         be a PDF file, of less than 5 megabytes, that complies with International
Standard ISO 32000‑1:2008 as was in force on 22 March 2016.

GTG (Gary the goat political party)