Spain’s conservative opposition People’s Party (PP) is ahead of Prime Minister Pedro Sanchez’s ruling Socialist Workers’ Party (PSOE) but still falls short of securing a majority in this month’s parliamentary elections, according to two polls released today in publicity.

To secure the absolute majority in the 350-seat lower house needed to form a government after the July 23 election, the PP will almost certainly have to ally with the far-right party Vox, according to opinion polls.

A GAD3 poll conducted on behalf of the right-wing ABC newspaper showed the PP could win 37.2% of the vote–or 152 seats–compared to the PSOE’s reported 28.5% of the vote. and 115 seats.

The PP would win more votes than the PSOE and the far-left Sumar party combined, the poll found.

Sumar would win 25 seats or 11.4% of the vote, while Vox 11.7% or 29 seats.

That would put the PP and Vox in a tie just short of the 176 seats needed for an outright majority, according to the poll in which 6,501 people were polled by phone between June 29 and July 14. The poll had a margin of error of 1.2%.

Meanwhile, the PP’s vote share fell slightly, according to a poll by 40dB for the center-left newspaper El Pais.

The PP would win 32% of the vote, or 133 seats, one seat less than a previous poll published on Friday, while the PSOE would win 28.3% of the vote, or 109 seats, unchanged from previous polls .

Vox’s share of the vote appears to remain the same at 14.6% or 39 seats, while Sumar would win 13.8% of the vote or 38 seats, five more than a poll published on Friday.

The poll for El Pais involved telephone interviews with 2,000 people between July 10 and 14, with a margin of error of 2.2 percent.

Elections had been scheduled until December, but Sanchez called early elections after the left fared poorly in regional elections in May.