The two-term Republican president told the Illinois senator upon his historic win: "What an awesome night for you, your family and your supporters."
Barack Obama was elected the nation's first black president Tuesday night in dominant fashion, besting Republican John McCain.
Bush promised Obama a smooth transition to the White House.
Bush spokeswoman Dana Perino said the president told Obama: "You are about to go on one of the great journeys of life. Congratulations and go enjoy yourself."
DISCUSS IT: Join in the the election night talk
