“Theodore Roosevelt (September 14, 1901-March 4, 1909). Republican…Before presidency he served offices at the federal, state, and municipal levels of government. Roosevelt became president when President William McKinley was assassinated. During his administration he tried to mobilize the Republican Party towards ideas of Progressivism. He won his first Presidential election after, which was technically his second term as President of the U.S.”

“U.S. Presidents,” TotallyHistory.com