Answer
Yes, Rauner lost in a landslide at the 2018 general election. This was due to a number of factors, including Rauner's unpopularity with both parties and his failure to deliver on key campaign promises. Additionally, the Democratic candidate, JB Pritzker, was a well-funded and well-connected candidate who was able to mount a strong campaign. As a result, Rauner was defeated by a wide margin.