In the US, we don't just vote for president. We vote for president, senators, congressmen, governors, state senators & congressmen, state offices, county officers, and city officers all at once. For example, in my area, I will vote on 25 different offices.
The president comes first (at the top of the ballot). The rest of the offices are listed after that (or further down on the ballot). So everything other than president is a "down ballot" race.