Primary day for congressional races is this Tuesday, but party chairs in one district want to make sure voters are also thinking ahead to November.

Five Democrats are running in the 21-st congressional district, which is currently held by Republican Elise Stefanik.

And this week, the 12 county party chairs sent out a letter to primary voters urging them to think about which candidate would have the best chance to beat her when they make their pick on Tuesday.

Here to explain why they sent the letter is Mark Bellardini, the Saint Lawrence County Democratic Chair.