The Tuesday primary won't be the most watched in Kentucky history. The presidential nominations have been decided and turnout will likely be low (around 12 percent). There are many races for state and federal positions that are expected to end in landslides, or they're between candidates who aren't expected to unseat the other party's nominee.But there are several races of interest. Notably in the crowded Republican primary for Kentucky's Fourth Congressional District, where Super PAC involvement and high-profile endorsements have made three candidates clear frontrunners to replace retiring incumbent Geoff Davis.There aren't any surprises expected in the commonwealth's five other congressional districts.On the state level, the highest profile contests are in the Louisville area and in northern and southern Kentucky.There's an unusual matchup in the 42nd Senate District Democrat Primary. That race pits incumbent Reginald Meeks against Tea Party leader Wendy Caswell, a long-time registered Democrat.There are several interesting contests for Louisville Metro Council. Perhaps the most watched is the First District Democratic Primary, where four candidates are challenging incumbent Attica Woodson Scott.Scott is hoping to be elected to the seat the council appointed her to after it removed Judy Green for ethics violations. The recent rash of violence in that district may change the dynamic in the final days before the vote.In the 18th District, Tea Party candidate Marilyn Parker is questioning incumbent Jon Ackerson's GOP loyalty, and the Second District contest may be influenced by a recent controversy surrounding incumbent Barbara Shanklin's grandson, who was recently fired as her legislative aid.These races and several others were all discussed in the most recent Noise & Notes podcast.Polls open at 6 am and close at 6 pm. WFPL will offer special on-air coverage at the top of the hour and a liveblog as events unfold Tuesday night.