Mr Dhumal had contested from Hamirpur in 2012 but this time he is contesting from Sujanpur constituency where women outnumber men by over 2200 voters.
Rajinder Rana had extended support to Virbhadra Singh after winning the polls last time and had resigned to contest Lok Sabha polls from Hamirpur in 2014 while his wife, who contested the assembly by-election from Sujanpur lost by a thin margin.
BJP's decision to project Mr Dhumal as a CM face has given a boost to the party's campaign in all five assembly segments in Hamirpur.
PK Dhumal's supporters are upbeat and claim that now it is a cakewalk but Mr Rana and other Congress leaders maintain that their over-confidence was misplaced.
Prestige of both the chief minister and the Lok Sabha member from Hamirpur is at stake in this seat as margin of victory would be crucial.
Rajinder Rana was a close confidant of Mr Dhumal for one decade and was appointed as chairman of the Media Advisory Committee when he became chief minister for the first time in 1998 but after denial of ticket in 2012, he entered the fray as an Independent.
He parted ways with the BJP chief ministerial candidate and contested Lok Sabha polls against Anurag Thakur in 2014 as a Congress candidate but lost.
For the BJP, "vote for chief minister" is the main poll plank in Hamirpur district and it has helped the party considerably.
Joginder Kumar Thakur (CPI-M), Parveen Thakur (BSP) and Ravinder Singh Dogra (NCP) are also in the fray but the main contest is between the Congress and the BJP.