You can daven for anything you want. The wonderful thing is that God is listening, no matter how trivial the request.
You can daven for health.
You can daven for parnassah.
You can daven for guidance in raising children.
You can daven that you make the 7-10 split.
You can daven that the Yankees win the pennant.
You can daven that your wife makes your favorite food dish.
In short, you can daven for anything that you like, including political candidates.
The Wolf