Special Counsel Robert Mueller has “stacked the deck” against the president by empaneling a second grand jury to probe supposed links between Russia and the Trump campaign, prominent lawyer Alan Dershowitz said Friday.

That’s because of something the real estate tycoon can readily understand: location, location, location.

The new panel will sit in Washington; the other one is in Alexandria, Va., Dershowitz told WABC Radio’s Rita Cosby.

DC is “always solidly Democratic and has an ethnic and racial composition that might be very unfavorable to the Trump Administration,’’ Dershowitz said.

Therefore if it votes to indict anyone, prosecutors will have a better chance of getting sympathetic jorors in Washington than in Alexandria, which is a “swing area, sometimes Democrat, sometimes Republican,’’ he said.

Asked by Cosby if he thinks it “kind of stacks the deck against the president,’’ Dershowitz, a former Harvard law professor, said, “Yes. Yes I do.’’

He described it as “a tactical move’’ by the prosecutor.