I had 3 routers connected with one layer 2 switch in same vlan. Each router is configured with the loopback addresses like 188.8.131.52, 184.108.40.206 and 220.127.116.11. so as per the DR and BDR selectiong 18.104.22.168 should be the DR and 22.214.171.124 should be the BDR. but when i issue the show ip ospf neighbor command then its indicating the 126.96.36.199 as DR and 188.8.131.52 as BDR and all the router had same priority field.
Once the election is done and DR and BDR already elected the only option available to other routers to become DR/BDR is when existing DR/BDR go down.
So in your situation afaik the only option is to reload the router with having adress 184.108.40.206 and 220.127.116.11 and then 18.104.22.168 router will take the role of DR.
NOTE: If this is live network do not follow my suggestion of reload without arranging downtime or as per your company network requirements.
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