Jeopardy! host Ken Jennings could be axed for a rather surprising reason as Colin Jost is set to host Pop Culture Jeopardy! Ken is at risk of being replaced, according to sources for The Mirror. They report that rumors suggest that the producers of the show aren't sure they will keep the current host as they are weighing their options. One reason given for the possible change-up is ratings as Wheel Of Fortune's viewership has spiked since Ryan Seacrest took over the hosting job last month. Jeopardy! executives are said to have taken note of the higher ratings since Ryan took the reins. This comes weeks after it was revealed that there is a possibility that Jost takes over for Jennings to host the actual flagship.