Bonsoir, vous pouvez me décrire cette photo s’il vous plaît que signifie ces couleurs ? Merci

In this picture we can see a vote sign for the US election of the year 2020. The colours can mean this:
the colour blue can signify to vote for the Democratic Party because, the colour that represents the democrats are blue.
But the red colour represents the Republican Party. This sign is a message to either vote for Joe Biden (D) or Donald Trump (R).