Going by Polymarket odds, Kamala’s odds of getting the nomination have increased much faster than her odds of winning the general election. 

Up to 92% chance of nominee but only 35% chance of winning the general. Shouldn’t either major party candidate have something like 45-50%? 

Is she that bad of a candidate or is there something else being priced in?

Yeah there seems to be a disconnect between how certain people are about her nomination and how much of a boost the official nomination should give her

If her general election head to head probability is 45-50% then multiplying that by being conditional on winning the nomination (92%) gives 40-45% of winning the general election. The former is obviously uncertain though. If you take her nomination as guaranteed then Kamala looks underpriced.