Could be a lot of reasons. We need more detail in the question. Does it crank over? Does it have fuel? What symptoms are you experiencing?
probably cam positionong sensor.
you flooded it
What is it doing? ddus it turn over but just wont start?
Possibly the crankshaft positioning sensor or Neutral Safety Switch
Yes, this is possible.
Does it turn over? Does it have fuel, spark and compression?
hard or wont start after and during rain
If the radio is not working on a 1998 Jeep Cherokee Sport it might be a blown fuse. Try the CD player to see if that works. If the CD player works then it might be an antenna problem.
possible faulty voltage regulator on your altinator. take it to your local parts store ie: napa-shucks etc.
somebody broke or didn't connect the crank sensor
How low is your gas tank ?
ok i have a 1986 jeep cherokee it wont start from the key in side it turns over but dosent fire up an its got (gas an fire) it will start if you pull start it an it has a carb