Beto O'Rourke, the Democratic nominee for Texas governor, announced Sunday he's postponing events after being treated in a San Antonio hospital for a bacterial infection.

Driving the news: "While my symptoms have improved, I will be resting at home in El Paso in accordance with the doctors' recommendations," O'Rourke tweeted.

• "I am sorry to have had to postpone events because of this, but promise to be back on the road with you as soon as I am able."

The big picture: O'Rourke is trailing Texas Gov. Greg Abbott (R) in the polls ahead of November's elections.

• The 2020 Democratic presidential candidate has drawn big crowds at Texas rallies — raising concerns among some Republicans that O'Rourke could do well in key battleground suburbs in the state, per Axios Dallas' Michael Mooney.

Go deeper: O'Rourke explodes on Abbott supporter who laughed during Uvalde remarks