Denver voters go to the polls for the Mayoral runoff election Tuesday. Mayor Michael Hancock is facing challenger Jamie Giellis. Political analyst Floyd Ceruli said the runoff campaign has gone very negative. He said it started with both sides talking about talking about development and homelessness and affordable housing but now it's all about race, diversity, gender and harassment. The candidates are in this race because neither one of them got 50 percent of the vote in the general election. Voters will also decide on a Denver clerk and recorder and five city council races. Proposition 302 is also on the ballot. It would require Denver leaders to ask voters before spending city money or resources on an Olympic bid.