Obama wins Wisconsin US Democratic presidential vote

MILWAUKEE, Feb 19 (Reuters) - Sen. Barack Obama won the Wisconsin vote to pick a U.S. Democratic presidential candidate on Tuesday, handing rival Hillary Clinton a ninth straight defeat and leaving her White House ambitions hanging on the upcoming contests in Texas and Ohio, media projected.

Obama's victory in Wisconsin means the Illinois senator has swept every state nominating contest since "Super Tuesday" in early February, when nearly half the states picked Democratic and Republican presidential candidates.

The victories have given him an edge in pledged delegates to the party's nominating convention this summer, leaving New York Sen. Clinton needing dominant victories in the big-state contests of Ohio and Texas on March 4 to catch up. (Reporting by John Whitesides, editing by Lori Santos)