Haley won almost 17% of Pennsylvania’s primary vote Tuesday, to Trump’s 83%, despite not campaigning for president since she ended her bid in early March. Should those Haley GOP voters refuse to support Trump in November, it could prove a damaging blow to his prospects for victory in Pennsylvania and, possibly, reelection.
One lesson of this year’s primary election seems to be that it’s hard to win a race with only a single issue, or with a focus on a single demographic or geographic base. Both of those problems were evident in the battle for the Democratic nomination for the 12th Congressional district.