Bill Cassidy
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US mid-terms 2014: Republican Cassidy triumphs in Louisiana run-off

US Republicans have increased their majority in the Senate after a runoff from the mid-term elections ended in defeat for the Democrats in Louisiana.

Republican Bill Cassidy's win against Senator Mary Landrieu swells their ranks in the 100-seat chamber to 54, and means Republicans gained nine Senate seats in the mid-term elections.

Mr Cassidy told supporters that the victory showed Americans wanted the country "to go in a Conservative direction".

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