Joe Lombardo, the governor of Nevada, was favored to win a second term. Now he’s in one of the nation’s tightest contests.

© Emily Najera for The New York Times

Former Vice President Kamala Harris will also rally for Democratic candidates in Georgia and Nevada.

© Angelina Katsanis/Associated Press

Aaron Ford easily outpaced a Washoe County commissioner, Alexis Hill, for the nod to take on Gov. Joe Lombardo in November.

© Jae C. Hong/Associated Press

The high rollers may still be crowding the tables, but high prices and pinched discretionary incomes are driving a sharp drop-off in visitors to Las Vegas as Nevada’s governor runs for re-election.