Arrogancy by Democrats? Bad polling?
Bad polling? No. Arrogance? Somewhat...a lot of us have been teased with and want a double-digit Clinton landslide, but even a 1% PV/272-266 EV victory for her is a major win as it ultimately denies Donald Trump the presidency. In reality, her leads on Real Clear Politics, HuffPollster, and fivethirtyeight have increased and she remains the favorite on Electoral-Vote.com with over 320 EV. She can lose Florida, Ohio, Nevada, North Carolina, and Iowa at this point and still win. Extremely unlikely. The race could tighten in the next 13 days, but you're just not looking at the right data if you think it will tighten so drastically that Trump sweeps the major battlegrounds and picks up a Solid Dem state. She's going to win, but perhaps not by the 8%+ some of us want.