Voters will head to the polls Tuesday to cast ballots in the Primary Election, but turnout isn’t expected to be all that great, because there typically isn’t as much interest as during the presidential election cycle. The Iowa Secretary of State’s Office doesn’t release projections of voter turnout. The polls will be open from 7-a.m. until 9-p.m.

Republicans will consider Iowa a possible pickup for the U.S. Senate seat in November. Senator Joni Ernst is the top contender in the GOP primary. The winner of the five-candidate race Tuesday will face in U.S. Rep. Bruce Braley in November. Braley is unopposed in the Democratic primary. That victor will replace longtime Democratic Sen. Tom Harkin. Besides the Senate race, the top primary contest in western Iowa is for the 3rd District Congressional seat, which represents southwest Iowa and includes Council Bluffs as well as much of the Des Moines area. Staci Appel will be the Democratic nominee, and the district has a crowded field of GOP hopefuls. If no candidate gets at least 35 percent of the vote, the Republican 3rd District nomination will be settled at a special convention.

Other races to watch include in State Senate District 11, where GOP candidates Art Hill and Tom Shipley are running to replace incumbent Hubert Houser, who is retiring. No Democrat is running in the district, which includes most of Pottawattamie County, all of Adams and Union Counties and part of Cass County.

Positions set to appear on the Cass County ballot for the 2014 Primary Election include: The Board of Supervisors positions in Districts 2 and 3; County Attorney; County Recorder and County Treasurer. Recorder Joyce Jensen is not running for re-election. Those vying for her position include: Republicans Mary Ward, Jess Ehrman, Shelly Glynn and Delbert Thurman, all from Atlantic. Cass County Attorney Dan Feistner faces a challenge in the Primary from Attorney Dave Wiederstein, an Audubon native who has lived in Atlantic since 2007. In Adair County, District 4 Supervisor Cliff Sheriff faces a challenge from fellow Republican Brian Rohrig.

In Adams County, there is a Republican race for Supervisor in District 4, with Kevin Olson and Leland Shipley the contenders. There are no contested Primary races in Audubon County. In Guthrie County, there is a race for the Board of Supervisors in District 2, where Republicans Clifford Carney and Todd Hambleton look to square off in November against Democrat Kerry Sheeder. There is also a Republican challenge between Bruce Lauritsen and Thomas Rutledge for the District 4 seat on the Guthrie County Board of Supervisors.

In Montgomery County: Incumbent Steven D. Ratchliff faces a challenge from fellow Republican Steven J. Berendes, in District 1. In District 2, incumbent Republican Karen Blue faces a challenge from Republican Joshua A. Wiig. And in District 4, Incumbent Republican Supervisor Randall Tye faces a challenge from two men: Republicans Brian Coughlin and Mark L. Peterson.

In Shelby County, the contested race will be for county recorder. Three republican candidates, Geralyn Greer, Renee Hansen and Colleen Oliver are running as well as two democrats Jessica Gessert and Larry Wendt. Current county supervisor Roger Schmitz, County Attorney Marcus Gross Jr. and County Treasurer Carolyn Blum all will be running unopposed.

Seven men, all Republicans, will seek three seats on the Pottawattamie County Board of Supervisors. The seven board candidates include three incumbents: Scott Belt, Lynn Leaders and Loren Knauss. The four other candidates are Justin Schultz, Tim Wichman, Steve Leaders and Brian Lund. There is also a Republican race for Pott. County Recorder, between Mark Brandenburg and Bill White.