Poll observers say the longest lines came when polls opened at 7 a.m. The crush of voters who arrived early created waits of up to an hour at some sites in Madison and Milwaukee.
Election workers are bracing for another rush once workers start leaving their jobs in the late afternoon. But mostly, they say the process is running smoothly except for routine technical glitches and registration problems.
Turnout appears high in many parts of the state. A poll worker at a downtown Madison voting site says more than 1,000 people voted there by 10:30 a.m.