The phrase "political juggernaut" refers to a powerful and unstoppable force in the political realm. It describes a person, group, or party that is very influential, successful, and widely feared or respected. Full definition
The Progressive Conservatives swept four by - elections in October 2014, including one in Calgary - Foothills, leading many political observers to believe that Mr. Prentice was an unstoppable political juggernaut. (daveberta.ca)
Lodging of official protests by Kaduna State's political juggernauts shows that the soul of his party APC is on a cliff. (dailypost.ng)
Therefore they must be at once political juggernauts and elegant statespeople, must practice refined sociopathy and rhetorical acrobatics, must with incredible subtlety trample dissent underfoot. (earthinbrackets.org)