Why Trump is winning — and how he can lose

CONCORD, N.H. – Spend some time up here, and it’s no mystery why businessman Donald Trump finds himself at the top of the polls for the Republican nomination in the nation’s first primary. It also becomes apparent that beneath the surface, his candidacy has a soft underbelly and he could collapse by the time voters go to the polls in February.

Trump’s passionate base of support, organizational prowess, skills as a retail politician, craftiness at attacking opponents and ability to seize control of the media narrative were all on display Wednesday morning when he visited the state house to become the first major Republican to formally file candidacy.