Like any centrist group, this one is subject to withering attacks from both left and right.
They are the Republican part of a centrist group in the Finance Committee that is pushing another plan.
Elsewhere in the hall, representatives of more centrist environmental groups, mainly American, scrambled to counterattack.
They are expected to finance the new centrist group.
About 40 of the 138 members of Parliament have formed a centrist group quietly pushing for compromise.
"We are proud to have split with such a centrist group," Mienov proclaimed.
His closest allies then seemed to be a variety of small centrist groups broadly favorable to reform.
He served along with the centrist group until 1967.
That centrist group has the potential to be the decisive bloc of votes in the new Senate.
On May 20th, he held a meeting of more than 30 centrist groups to start preparing for elections.