Major issues for Dutch voters include how to respond to climate change, the rising cost of living, and a desire to restrict immigration.
Analysts said that with large numbers of undecided voters, much will depend on debate performances, including a final clash scheduled for Tuesday night.
Yesilgoz, who had not ruled out a coalition with Wilders and had focused on Timmermans as her main opponent, has begun backtracking.
On Tuesday she ruled out serving in a cabinet in which Wilders is prime minister.
The party that wins the most seats traditionally takes a lead in negotiations and provides the prime minister -- but that is not guaranteed under the Dutch system.
Persons:
Frans Timmermans, Geert Wilders, Wilders, Dilan Yesilgoz, Mark Rutte's, Yesilgoz, Timmermans, Rutte, Geert Wilders you'll, Toby Sterling, William Maclean
Organizations:
Party, Labour, Green Left, Research, Timmermans, Freedom Party, New, Analysts, Thomson
Locations:
AMSTERDAM, Netherlands