Sweden opened polling stations at 8 a.m. The far-right Sweden Democrats party could enter government for the first time if right-wing bloc wins. Key points and original sources are listed below.

• Sweden opened polling stations at 8 a.m. Sunday in a general election so close that final surveys placed the country’s two political blocs within roughly two percentage points of each other, a race that will decide not only who becomes prime minister but wheth...S1

• The far-right Sweden Democrats party could enter government for the first time if right-wing bloc wins.S2