These are the US Presidents of my lifetime:
Roosevelt, Franklin D. - 3/04/33 - 4/12/45
Truman, Harry S. - 4/12/45 - 1/20/53
Eisenhower, Dwight D. - 1/20/53 - 1/20/61
Kennedy, John F. - 1/20/61 - 11/22/63
Johnson, Lyndon B. - 11/22/63 - 1/20/69
Nixon, Richard M. - 1/20/69 - 8/9/74
Ford, Gerald R. - 8/9/74 - 1/20/77
Carter, Jimmy - 1/20/77 - 1/20/81
Reagan, Ronald W. - 1/20/81 - 1/20/89
Bush, George H.W. - 1/20/89 - 1/20/93
Clinton, William J. - 1/20/1993 - 1/20/2001
Bush, George_W. - 1/20/2001 - 1/20/2009
Obama, Barack - 1/20/09 - 1/20/2017
Trump, Donald – 1/20/17 – 1/20/2021
The Bible says in1 Timothy 1-4: "First of all, then, I urge that requests, prayers, intercession, and thanksgiving be made in behalf of all people, for kings and all who are in authority, so that we may lead a tranquil and quiet life in all godliness and dignity. This is good and acceptable in the sight of God our Savior, who wants all people to be saved and to come to the knowledge of the truth." (NASB)
I am a Republican; did I pray with any consistency for the Republican presidents? No. Did I pray with and consistency for any of the Democratic presidents? No. Once I became a Christian should I have? Yes. Will I in the future change my habits and pray for and about government officials, including president-elect Biden? My intention is that I will. I think other believers should too.
