(CNN) - Senate Democratic leaders think Roland Burris, Illinois Governor Rod Blagojevich's pick to fill President-elect Barack Obama's vacant Senate seat, will likely show up on Capitol Hill Tuesday for the opening day of Congress, according to a Democratic aide familiar with Senate Democratic leaders' plans.
They have prepared a contingency plan in case he does, the aide added.
Burris will not be allowed on the Senate floor, according to this aide and a Senate Democratic leadership aide.
Watch: What if Burris shows up?
The aide familiar with Senate Democratic leaders' plans said if Burris tries to enter the Senate chamber, the Senate doorkeeper will stop Burris. If Burris were to persist, either trying to force his way onto the Senate floor or refusing to leave and causing a scene, U.S. Capitol Police would stop him, said the aide.
"They (police) probably won't arrest him" but they would call the sergeant-at-arms," the aide said.
When asked about what would happen if he shows up and tries to be seated, Burris told the Chicago Tribune that he's, "not going to create a scene in Washington." He added, "We hope it's negotiated out prior to my going to Washington."
Burris told CNN that, "We're certainly going to make contacts with the leadership to let them know that the governor of Illinois has made a legal appointment. And that I am currently the junior senator for the State of Illinois. And we're hoping and praying that, you know, they will see the reason in appointing me as a very qualified, capable, able and ready-to-serve individual."
Coincidentally, the senate sergeant-at-arms, Terrance Gainer, served in the Illinois government at the same time as Burris. Gainer was the director of the Illinois State Police from 1991-95. Burris was the Illinois attorney general from 1991-95.
Senate Democratic leaders, who consider Governor Rod Blagojevich a loose cannon, also have discussed what might happen if Blagojevich shows up on Capitol Hill Tuesday, said the aide familiar with their plans. But the leaders see that move by Blagojevich as unlikely at this time.
This would be a "radioactive" situation, according to the aide, because Senate Democratic leaders could not deny Blagojevich entry, as sitting governors have floor privileges in the Senate. Governors are allowed to walk around the Senate chamber or talk with senators while on the floor, though they cannot vote or formally address the Senate.
Blagojevich is aware he is allowed access to the Senate floor, his spokesman Lucio Guerrero said, but "the idea of going on Tuesday was first raised by a reporter," not Blagojevich.
The governor is not planning on going to Capitol Hill at this time, Guerrero said.