road show
A traveling tour around many different cities meant to demonstrate or advertise some particular message, service, or product. The senator has begun a three-week-long road show to kick off his campaign for the presidency. The social media behemoth is rolling out a road show to promote their new augmented reality service, which launches at the end of the year.
road show
A tour made for a particular purpose, especially a political campaign. For example, It was primary season, and every would-be candidate was planning a road show. This term originated about 1900 for touring theatrical productions and in the mid-1900s began to be transferred to other endeavors.