There's no politics from hanumangarh for sure. The biggest political turmoil is from bikaner and churu sikar. That's why trains are being extended for them. And bikaner MP will never let go ranakpur.
Plus don't compare jaipur with bikaner/jodhpur. Jaipur always extended trains to all rajasthan, while bikaner jodhpur ajmer never or rarely extends their trains. That's the main difference.