In the bowl of a stand mixer, add the water and starter. Pulse until combined.
Add the flour, cinnamon, and salt. Mix well into a shaggy dough.
Let soak for 30 minutes.
Add raisins and knead the dough on speed 2 for 5-6 minutes.
Prepare a loaf pan by spraying with olive oil or putting a piece of parchment paper in it.
Turn dough onto a lightly floured surface and shape the dough into a log shape.
Place in prepared loaf pan.
Cover with plastic wrap or a damp tea towel and let rise in a warm place until the dough is 1-2 inches above the rim of the pan.
Preheat the oven to 350 degrees F.
Bake for 35 minutes or until golden brown. The internal temperature should be 195-205 degrees F.
Allow to cool completely on a wire rack before slicing.