Until April 2007, the PNL was the largest member of the governing Justice and Truth Alliance, which enjoyed a parliamentary majority due to an alliance between the PNL, PD, the Conservative Party (PC) and the UDMR. In April 2007, then PNL prime minister Călin Popescu-Tăriceanu, who was also the party leader, formed a minority government solely with the UDMR and the remainder PD ministers were reshuffled. This cause internal opposition within the party and led to a splinter group, the Liberal Democratic Party (PLD), eventually merging with the PD to form the Democratic Liberal Party (PDL).