The big unknown behind Democrats' polling leads
Poll after poll spells trouble for GOP candidates — in purple states and deep-red ones alike — but while Democrats see a blue wave coming, some Republicans see a polling mirage.Why it matters: Pollsters worry they're flying partly blind. Even a modest polling error could mean the difference between
<p>Poll after poll spells trouble for GOP candidates — in purple states and deep-red ones alike — but while Democrats see a blue wave coming, some Republicans see a polling mirage.Why it matters: Pollsters worry they're flying partly blind. Even a modest polling error could mean the difference between </p>