Complex sentence: Harding elected to conduct a front porch campaign, like McKinley had done in 1896, a plan that met enthusiastic approval from the RNC, which arranged to have the flagpole from McKinley's front yard in Canton moved to Harding's Marion.
Split into simpler sentences: Harding elected to conduct a front porch campaign, like McKinley had done in 1896. This plan that met enthusiastic approval from the RNC, which arranged to have the flagpole from McKinley's front yard in Canton moved to Harding's Marion.