The hexmap package automates the process of generating hexagonal cartograms for the U.S., in the style of the Daily Kos election maps. Districts are built from hexagons and placed inside state boundaries to best approximate their real-world geography. States are sized and positioned to recreate the overall shape of the country while balancing the areas of each district.
You can install the development version of hexmap from GitHub with:
# install.packages("devtools")
devtools::install_github("CoryMcCartan/hexmap")