Leave message: Spend the £350 million we send to the EU every week on the NHS.

Remain message: Yanks say Remain.

Cut through: Obama visiting.

Leave social media count: 327,513 likes, 36,293 followers.

Remain social media count: 358,005 likes, 24,303 followers.

Odds: Leave 7/4, Remain 4/7

Latest poll: Remain 49% (-3) Leave 39% (-4) (Ipsos MORI, phone). Poll of Polls is now Remain 53 (+1) Leave 47 (-1).