It is certainly a tribal thing, which really, it isn't even the place for it. All the parties follow a paint-by-numbers fashion and appeal to the public to win voters anyway, when there is no real guarantee of policies coming into fruition.
This is the exact reason I do not like representative democracy - because a partisan government detracts from the real issues, creating a literal belief system and popularity contest, which has more regular media coverage than something as essential as science. It compares with religion, football or even “Apple faith”.
It’s logical to me to have a direct democracy instead, which is how Ancient Greece managed politics, and many countries today aspire to or are emulating. Unfortunately, power is more important to people than accurate representation, which, in my opinion, creates a false democracy.
In my opinion, as well, a direct democracy would also increase the overall intelligence of the country too, because voting directly for policies literally demands that you learn about the advantages and disadvantages of policies before casting a vote. In our system however, you can vote based purely on your favourite primary colour.