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Former Hewlett-Packard boss has steep climb to build on strong GOP debate performance
Presidential candidates spar in front of rowdy crowd in first televised stand-off
US campaign gaffes have alarmed many big-ticket donors and even allies
Democratic frontrunner for US president aims to neutralise attacks on transparency
‘Super-Pacs’ reveal rise of big-time political spenders
Candidates fixated on how to contain master of self-promotion ahead of debate
Lobbying intensifies in run-up to make or break Congress vote on pact
White House says plans could lead to at least $140bn in new green investments
The candidates agree that middle class income stagnation is a problem but argue over the solution
Outspoken and controversial billionaire races ahead to lead field for presidential nomination
Kathryn Dominguez of University of Michigan would be Obama’s second nominee this year
President turns to social impact of criminal justice system that costs $80bn a year
The Wisconsin governor becomes 15th Republican to enter race, counting on humble appeal
Democratic frontrunner promises to be tough on financial crime as part of progressive agenda
‘Shock and awe’ strategy outpaces rivals in bid for White House
2016 campaigns depend on rank-and-file support as much as billionaire backers
Anti-immigrant remarks damage party’s efforts to court the Hispanic vote
Democratic frontrunner accuses Republicans of ‘constant barrage’ of unfounded attacks
Greater donations in first three months than for any other presidential frontrunner including Obama
New Jersey governor’s late start in 14-strong field puts him at a disadvantage
Once one of the GOP’s favoured candidates, the New Jersey governor is now seen as a long shot
President cites income equality campaign in measure that could benefit up to 5m workers
Decision paves way for some US states to restart capital punishment
Rulings on gay marriage and healthcare show Supreme Court’s own culture wars
As young voters lend support, party frontrunners struggle to keep up with attitudes
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