Eurozone bond yields edged higher after falling sharply yesterday, ahead of a French government bond sale that will test investor demand ahead of the second round of parliamentary elections on Sunday.

The yield on Germany’s 10-year bond, the euro zone’s benchmark, rose 1.3 basis points to 2.571 percent, after falling 5 points on Wednesday after weak U.S. economic data.

France will raise up to 10.5 billion euros from four bond sales on Thursday, Reuters notes.

The yield on France’s 10-year bond rose 2.6 basis points to 3.272% after falling 6 basis points yesterday.

The gap between French and German borrowing costs, which rose to its highest level since 2012 at 85 basis points as fears of a far-right election victory grew, was 70 basis points.

Italy’s 10-year bond yield was 2.9 basis points higher at 4.012%.

Germany’s two-year bond yield was little changed at 2.914%.