Voter apathy, barking dogs and fervent Donald Trump supporters confront Carin Pacifico as she knocks on doors campaigning for Kamala Harris in her rural Pennsylvania community, where Republicans outnumber Democrats roughly seven to three. Votes in rural areas like Altoona will be vital to the Democrats' chances of winning the State, but persuading undecided voters is an uphill challenge. IMAGES AND SOUNDBITES ARRANGED IN SEQUENCES