When President McKinley was fatally shot by an [[anarchist]] in 1901, Roosevelt automatically became President and was reelected against a challenge by the Democratic candidate Alton B. Parker in [[United States presidential election, 1904|1904]]. | When President McKinley was fatally shot by an [[anarchist]] in 1901, Roosevelt automatically became President and was reelected against a challenge by the Democratic candidate Alton B. Parker in [[United States presidential election, 1904|1904]]. |