New Hampshire Primary
They said he risks "tarnishing" his legacy.
The GOP primary saw more national surveys online and more live phone surveys of Iowa and New Hampshire.
Why insurgent candidates from both parties triumphed on primary day.
A report on British polling highlights the challenges election pollsters face worldwide.
WHAT'S HAPPENING
“Whether we have differences or not, we can talk about them."
And the timing was perfect.
Voters in both parties are polarized and unhappy.
Donors gave $5.6 million in the 21 hours after his address.
Confused media offer the best observations they can.
