"[5] Throughout his political career, Pásztor has advocated for the decentralisation of Serbia's government and the creation of a majority-Hungarian administrative district in northern Vojvodina, while also stressing his opposition to separatism.

)[13] After the election, he was chosen as leader of a parliamentary group comprising four parties representing national minority communities.

[16] Pásztor received the sixth position on the electoral list of the Hungarian Coalition, a multi-party alliance led by the VMSZ, in the 2008 parliamentary election.

Shortly before the assembly voted on the new administration, Pásztor threatened to withdraw support unless the government created a new ministry of human and minority rights.

[22][23] In 2009, Pásztor led the VMSZ in supporting a bill allowing for the direct election of national minority councils.

[26][27] During this period, the VMSZ took part in strategic discussions with Viktor Orbán, the leader of Hungary's Fidesz party; some in the Serbian media speculated that, under Orbán's influence, the VMSZ would break its alliance with the DS and support the opposition Serbian Progressive Party (SNS).

Pásztor rejected this, saying that the VMSZ had also met with other political parties in Hungary and was open to renewed co-operation with the DS in the future.

[29] In October 2011, Pásztor argued that Serbia's law on the restitution of property seized by communist authorities after World War II should be amended to permit a greater number of claims from the country's Hungarian community.

[31] Serbia's electoral system was reformed in 2011, such that all parliamentary mandates were awarded to candidates on successful lists in numerical order.

The VMSZ was invited to join the government but declined; Pásztor indicated that his party would be a constructive opposition and would offer support for laws ensuring Serbia's accession to the European Union.

"[40] The VMSZ led a successful drive to increase its voter turnout in the 2020 Serbian parliamentary election and won a record nine seats in the national assembly.

[45][46] He led the VMSZ's list for a fifth consecutive time in the 2022 Serbian parliamentary election and was re-elected even as the party fell back to five seats.

[50] The SNS and its allies won a majority victory, and Pásztor afterward represented the VMSZ in negotiations for a new administration.

He said that his party was not seeking ministerial positions but wanted to remain part of the government at the state secretary level.