Estonians have started voting in a parliamentary election in the small Baltic nation in a ballot where Prime Minister Juri Ratas and his Center Party are pitted against the center-right opposition Reform Party and where populists are seen making inroads.

Sunday’s vote in the NATO and the European Union member of 1.3 million comes as the far-right, nationalist Estonian Conservative People’s Party, EKRE, has substantially increased its popularity since the 2015 election.

Both main contenders wish to keep it at bay.

FILE - In this file photo taken on Thursday, Dec. 13, 2018, Estonian Prime Minister Juri Ratas speaks with the media as he arrives for an EU summit in Brussels. (AP Photo/Geert Vanden Wijngaert, File)
FILE – In this file photo taken on Thursday, Dec. 13, 2018, Estonian Prime Minister Juri Ratas speaks with the media as he arrives for an EU summit in Brussels. (AP Photo/Geert Vanden Wijngaert, File)

Nearly a million voters are eligible to elect representatives for the next four years to the 101-seat Riigikogu legislature.

About 26 percent have previously cast their votes online. Electronic voting pioneer Estonia was the first country in the world to use online balloting for a national election in 2005.

In this photo taken on Tuesday, Feb. 26, 2019, Chairwoman of the Reform Party Kaja Kallas poses for a photo in Tallinn, Estonia. (AP Photo/Raul Mee)
In this photo taken on Tuesday, Feb. 26, 2019, Chairwoman of the Reform Party Kaja Kallas poses for a photo in Tallinn, Estonia. (AP Photo/Raul Mee)