Here are a few ways to rewrite the title in Swedish, depending on the exact tone you want:
Most direct and natural translation:
Ebba Busch om valspurten: Det är lite bitterljuvt
A slightly more formal/news-style version (with quotation marks):
Ebba Busch om valspurten: ”Det är lite bitterljuvt”
Alternative phrasing with a more descriptive verb (if you want to vary the structure):
Ebba Busch om valspurten: ”Det känns lite bitterljuvt”
All of these are correct. ”Valspurten” is the standard Swedish term for the final sprint of an election campaign, and ”bitterljuvt” is the exact Swedish equivalent of ”bittersweet.”