Or, another 'artisan' approach :-)
1. Draw a rectangle big enough to include all slide elements - Send it To Back. Copy that rectangle to all slides + Send to Back.
2. On your first slide, select the rectangle + all the elements (without grouping) and drag all together to the left.
3. Add a vertical guide to the new position of the rectangle.
4. On all other slides: select the rectangle + all the elements (without grouping) and drag all together to the new guide.
5. On all slides: delete the rectangle.