Via AFP:
The US Republican establishment suffered an embarrassing political setback Tuesday courtesy of a Tea Party challenger, who battled a long-time Senate incumbent to a draw in a Mississippi race with national implications.
Seven other states also held primaries in one of the biggest vote nights of the 2014 campaign season ahead of November's congressional mid-term elections in which Republicans are aiming to take back the Senate from President Barack Obama's Democrats.
But all eyes were on Mississippi, where the Tea Party movement poured outside funding into its best chance to oust an est...
