Rep. John LewisJohn LewisThe Hill's Morning Report — Biden steadies in third debate as top tier remains the same CBC marks 400th anniversary of slaves' arrival in US GOP buys JonOssoff.com after Democrat launches Georgia Senate bid MORE (D-Ga.) gained the biggest online presence of any House Democrat during Minority Whip Steny HoyerSteny Hamilton HoyerThis week: House jump-starts effort to prevent shutdown Words matter, except to Democrats, when it involves impeaching Trump Nadler: Impeachment inquiry a 'made-up term' but it's essentially 'what we are doing' MORE's (D-Md.) "Online All-star Competition."

Lewis took the title after gaining 17,495 followers through Facebook, Twitter, Instagram and YouTube in the month of July, according to Hoyer's office.

Hoyer's has hosted the three-week online competition annually going back to 2010 as a way to get his caucus to engage on social media. The competition started on July 1 and the winner was announced Monday.

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Lewis, who has nearly 43,000 followers on Twitter, won the competition while highlighting his civil rights background during the 50th anniversary this month of the passage of the Civil Rights Act.

Far and away, his most popular tweet came on July 7 when he posted his mug shot to mark the 53rd anniversary of his release from a jail for using a "white" restroom. The picture was retreated 49,000 times.

He highlighted similar tweets throughout the month.

Excluding House Minority Leader Nancy Pelosi (D-Calif.), Rep. Joaquín Castro (D-Texas) trailed most closely behind with 6,051 new followers, mostly from Facebook. Hoyer cited Castro's use of a Facebook town hall and his frequent posts on the crisis on the border, where thousands of unaccompanied minors have been apprehended crossing the border.