The American Physical Society, Fermi National Accelerator Laboratory and SLAC Laboratory organized endorsements by the community of the P5 report. As of January 15, the number of endorsers was 2602 US scientists. Among the endorsers, 37% were tenured faculty level or laboratory scientists, 9% were at the untenured faculty or laboratory scientist level, 16% were postdoctoral fellows, 20% were graduate students, and the remainder were other categories. The geographic distribution of the endorsements heavily favored Illinois, home of Fermilab, and California, home of SLAC.