Polarization, Gridlock, and Presidential Campaign Politics in 2016

The American electorate has grown increasingly divided along party lines in recent decades, by political attitudes, social values, basic demography, and even beliefs about reality. Deepening partisan divisions have inspired high levels of party-line voting and low levels of ticket splitting, resulting in thoroughly nationalized, president- and party-centered federal elections. Because of the way the electoral system aggregates votes, however, historically high levels of electoral coherence have delivered incoherent, divided government and policy stalemate. The 2016 nomination campaigns have exposed deep fissures within as well as between the parties, and their results threaten to shake up electoral patterns that have prevailed so far during this century, with uncertain and perhaps unpredictable consequences for national politics. The 2016 election is certain to polarize the electorate, but the axis of polarization may not fall so neatly along party lines as it has in recent years.