Former Florida governor and Republican candidate for president Jeb Bush speaks to  third graders before  taking part in a town hall meeting at La Progresiva Presbyterian School in Miami, Florida, September 1st, 2015. Photograph: Joe Skipper/Reuters

Republican presidential hopeful Jeb Bush offered his most direct assault on rival Donald Trump to date on Tuesday, retaliating for a series of persona(...)

Republican presidential candidate Donald Trump: both the Republican establishment and the punditocracy have been shocked by his continuing appeal to the party’s base. Photograph: Jason Davis/Getty Images

There are many things we should remember about the events of late August and early September 2005 and the political fallout shouldn’t be near the top (...)

“A lethargic, insubstantial image of Jeb Bush that is at odds with the perky red ‘Jeb!’ campaign logo”. Photograph: Reuters/Jay Westcott

Pity Poppy. When I went down to Houston a few years ago to eat pizza with the former president, he was his usual gracious self, speaking fondly about (...)

Donald Trump speaks at a rally  in Mobile, Alabama. Photograph:  Mark Wallheiser/Getty Images

Some blondes have all the fun. As Hillary Clinton and Jeb Bush get more testy, Donald Trump gets more chesty. And more blond. It’s mind-boggling to co(...)

Labour leadership candidate Jeremy Corbyn speaks outside the Tyne Theatre and Opera House, Newcastle, during his campaign. Photograph: Owen Humphreys/PA

Political scientist David Runciman has an interesting analysis of the British Labour Party’s leadership contest, and why Jeremy Corbyn, dismissed by m(...)

Democratic presidential candidate  Hillary Clinton: favourability ratings have fallen to their lowest levels since 2001. Photograph: Isaac Brekken/Getty Images

Hillary Clinton’s lead in the race for the 2016 Democratic presidential nomination has narrowed and her overall favourability ratings have fallen to (...)

Jeb Bush at the Ronald Reagan Presidential Library. Photograph: Monica Almeida/The New York Times

Republican presidential candidate Jeb Bush has attacked Democrat Hillary Clinton for her handling of Iraq as secretary of state, saying she must share(...)

Donald Trump speaking to the media after the first Republican presidential debate. A feud with Fox News moderator Megyn Kelly has failed to dent his popularity, according to a Reuters/Ipsos poll. Photograph: Andrew Harrer/Bloomberg

Donald Trump continued to defy the laws of political gravity on Monday as a Reuters/Ipsos poll found the real estate mogul holding on to a wide lead (...)

Donald Trump: ‘Policy ideas are ripped from the gut instead of the head. Still, he can be a catalyst, challenging his rivals where they need to be challenged.’ Photograph:  David Maxwell/EPA

I’ve been hesitant to start writing about Donald Trump. I was worried that if I wrote something that made him mad, he would send out one of his midnig(...)

The first Republican TV debate of the US presidential season, courtesy of Donald Trump, was certainly not dull. But although sharper-than-usual questi(...)