ARLINGTON, VA., - Newt Gingrich ended his tumultuous run for US president on Wednesday after dazzling in televised debates but winning only two of the dozens of nominating contests in the Republican primary race.
The former US House of Representatives speaker, the face of the Republican party in the mid-1990s, badly trailed front-runner Mitt Romney in polls and his campaign fell into debt of $4.3 million.
Gingrich dropped his White House bid at a news conference in Arlington, Virginia, although he had not been campaigning properly for weeks after plunging in polls and cutting staff.
Gingrich briefly led the Republican pack before the Iowa caucuses on Jan. 3, but he fell victim to a new force in US politics: the independent "Super PACs" or political action committees that have no limits on how much money they can raise or spend in support of candidates.
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