(A) ** He began by serving in the Illinois state senate.
(B) Obama started out as a U.S. Senator.
(C) He became the mayor of Chicago at age thirty.
(D) Obama helped his wife Michelle to run for office
EXPLANATIONS BELOW
Concept note-1: -After graduating, he became a civil rights attorney and an academic, teaching constitutional law at the University of Chicago Law School from 1992 to 2004. Turning to elective politics, he represented the 13th district in the Illinois Senate from 1997 until 2004, when he ran for the U.S. Senate.
Concept note-2: -At the November 3 general election, Obama was re-elected to a four-year term as state senator for the 13th district with 89% of the vote; Yehudah received 11% of the vote.
Concept note-3: -The Illinois Senate career of Barack Obama began in 1997 after his first election in 1996 to a two-year term in the Illinois Senate representing Illinois’ 13th Legislative District in Chicago. He was re-elected in 1998 to a four-year term and re-elected again in 2002 to another four-year term.
Concept note-4: -As a Senator, Obama served on a variety of committees and chaired the United States Senate Foreign Relations Subcommittee on European Affairs. His bill sponsorship and voting records indicates that he was a loyalist to the Democratic Party. He was considered to be among the most liberal by various analyses.