In politics, a rosette is a fabric decoration worn by political candidates to identify themselves as belonging to a particular party. The rosette, worn on the chest or suit jacket, will show the colour or colours of the political party that the candidate represents. Rosettes are worn by campaigning politicians in the United Kingdom, New Zealand and some other countries.

Political colours are colours used to represent a political ideology, movement or party, either officially or unofficially. They represent the intersection of colour symbolism and political symbolism. Politicians making public appearances will often identify themselves by wearing rosettes, flowers, ties or ribbons in the colour of their political party. Parties in different countries with similar ideologies sometimes use similar colours. As an example the colour red symbolises left-wing ideologies in many countries, while the colour blue is often used for conservatism, the colour yellow is most commonly associated with liberalism and right-libertarianism, and Green politics is named after the ideology's political colour. The political associations of a given colour vary from country to country, and there are exceptions to the general trends, for example red has historically been associated with Christianity, but over time gained association with leftist politics, while the United States differs from other countries in that conservatism is associated with red and liberalism with blue. Mass media has driven a standardization of colour by political party, to simplify messaging, while historically the colour a candidate chose to identify with could have been chosen based on other factors such as family or regional variations.