Look at photos from any political rally.
You always see official candidate posters alongside homemade posters.
Nothing is wrong with grassroots activism to empower your brand but consider creating a coherent and standard design system.
Create a central location on the Internet that allows anyone to download official graphics.
Provide the typeface if it is free to distribute.
Very few political parties or political candidates do this.
If you do this then your brand will have power.
And power is everything in politics.