MILWAUKEE (AP) _ In a campaign that focused on arrests and drinking water, Mayor John Norquist was expected to cruise to victory Tuesday in his bid for a third term.

If elected, underdog Richard Artison would be the first black mayor in this city of 628,000, where blacks make up nearly a third of the population.

Polls have shown the 46-year-old Norquist easily winning, however. Going into the final weeks, the former Milwaukee County sheriff was broke.

Artison reported a zero cash balance in his March 4 filing, after raising and spending about $220,000. Norquist, who started the campaign with about $600,000, almost doubled that and had $425,000 in the bank.

Norquist attacked the former sheriff for a drop in the number of arrests during Artison's administration. Artison, 62, resigned in December after 12 years as sheriff to run for mayor.

Artison blamed Norquist for a 1993 outbreak of bacterial cryptosporidia in municipal drinking water that was blamed for the deaths of more than 100 people.