Polls are open in Davenport until 8 pm for today's primary election. Voters will choose candidates for the November ballot for mayor and alderman. Three people are challenging Mayor Bill Gluba who's running for a 5th term. They are retired YMCA chief executive officer, Frank Klipsch, plus Dave Hereid and Dean Webber. Hereid is self-employed, and Webber works for the city's public works department.