By Kayleen Devlin & Shayan Sardarizadeh
BBC Monitoring
A series of false and misleading claims have gone viral online days before the US midterm elections.
Some of the claims cast doubt on the legitimacy of the voting process in key states, while others include manipulated content from across the political spectrum.
The BBC has examined some of the most widely shared claims.
Claims that voting machines flip votes from Republicans to Democrats and vice versa have dogged US elections for years. Yet to date there is no evidence to suggest that election tampering has taken place.
A handful of posts recently began circulating on social media from voters in Texas who claimed that voting machines were switching their votes from Democrat to Republican. One tweet read: "Texas GOP up to the same dirty tricks."
Local county officials and the secretary of state's office all confirmed receiving a small handful of reports relating to voters experiencing difficulties with touch screen machines, and have encouraged voters to review their ballots before submitting them.
In a local interview, Sam Taylor, a spokesperson for the Texas secretary of state's office, denied any tampering going on and instead put the instances down to user error.
Voting machines have previously been hacked by researchers in controlled studies to test how vulnerable they might be.
Electronic Systems Software, a company which provides voting machines to multiple Texas counties, has...
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