Hungary's upcoming parliamentary elections could put a pro-EU government in power after more than a decade of euroskeptic, nationalist rule under Prime Minister Viktor Orban, but the Fidesz party's entrenched control over national institutions and legal levers would still significantly constrain reforms and could even enable the party to obstruct the transition of power altogether. Hungary will hold parliamentary elections on April 12, in what opinion polls project will be the country's most competitive national vote since Prime Minister Orban took office in 2010. Most surveys show the opposition Tisza party, led by pro-European reformist Peter Magyar, polling at around 47%, compared with roughly 39% for the ruling Fidesz party. Some polls give Tisza a lead of up to 20 points, with its strongest support concentrated in Budapest and other major urban centers, but increasingly extending into regions that have traditionally backed Fidesz.