I was wrong, it varies but most get paid:
How much do poll workers get paid in each state?
The method varies between states with some setting a minimum hourly wage and others opting for daily compensation, but the local authorities can, and often do, pay more to ensure they get enough staff.
Of the states to offer a daily stipend to poll workers, 13 of them have a minimum amount of less than $100 a day:
Alabama, Arizona, Colorado, Delaware, Georgia, Illinois, Kansas, Kentucky, Louisiana, Pennsylvania, Rhode Island, Tennessee, Virginia
Another seven areas (five states and two territories) guarantee poll workers a minimum daily stipend of at least $100 a day:
Guam, Maryland, Mississippi, New Jersey, New York, Oklahoma, Virgin Islands
In eleven states poll workers are entitled to be paid at the state or federal minimum wage or higher, on an hourly basis:
Arkansas, Idaho, Iowa, Minnesota, Montana, Nebraska, New Mexico, North Carolina, Ohio, Texas, Wyoming
Three states have designated a specific hourly wage that differs from the minimum wage:
Alaska, Missouri, North Dakota
And poll workers in the remaining states and one territory are not bound by a state-defined minimum wage or daily stipend, leaving the decision of payment entirely in the hands of local election officials:
American Samoa, California, Connecticut, District of Columbia, Florida, Hawaii, Indiana, Maine, Massachusetts, Michigan, Nevada, New Hampshire, Oregon, South Carolina, South Dakota, Utah, Vermont, Washington, West Virginia, Wisconsin