This is the first time since Orban took power that he faces headwinds on the economy. Hungary has had two technical recessions, inflation was 25% at one point, food inflation 45%. The situation has improved but there are cracks. Hungary is a small, open economy so global conditions matter.
If there is political change, the EU might be more willing to make a deal on funds, but the deadline is tight. You can't change the structure of the economy within four years. The market is betting on political change and sees it as positive. There's a 40% chance of Fidesz winning, 5% chance of a hung parliament. If there's no clear winner, it could create volatility.