What to Say
1. We do not have an awareness problem.
As long as you are sincere, you cannot go wrong.
PostCards are not a campaign ad.
Voters are inundated with ads and mailers.
Most of which are a waste of time and money. (Opinion of highly experienced ad biz pro.)
But they are not getting many personal PostCards.
The first impact is to get read, not tossed.
The more rote your PostCards look, the more they are "selling", or making obscure campaign points, the more likely they are to get tossed.
Personal stuff gets read.
Decorate, draw, color, or not, anything you like.
But hand-written is what matters.
The goal of PostCards is GOTV - Get Out the Vote
As hard as it is to believe, some people don't think their vote matters.
You are reassuring them that is essential.
Write as if to a friend.
You are urging from one Dem to another.
To go vote. How only that person can make a difference.