January 19, 2008 (Saturday)
- Adolfo Nicolás is elected as the thirtieth Superior General of the Society of Jesus. (BBC News)
- 2008 United States presidential election:
- Voters in Nevada and South Carolina go to the polls to determine presidential nominations for the Republican and Democratic parties.
- Former Governor of Massachusetts Mitt Romney wins the Nevada Republican caucus. (The New York Times)
- Nevada Democratic caucus: New York Senator Hillary Clinton wins 51% of state delegates, but Illinois Senator Barack Obama wins the state's national delegates 13 to 12. (CNN)
- Arizona Senator John McCain wins the South Carolina Republican primary. (CNN)
- California Congressman Duncan Hunter withdraws his candidacy. (CNN)