(CNN) Sen. Ted Cruz's reelection campaign on Tuesday defended a mailer labeled as "Official Travis County Summons" that was soliciting campaign contributions.

The Texas Republican's campaign had faced criticism for the mailer after it was shared on social media.

Sean Owen, a resident of Austin, Texas, tweeted, "Received this for my 88-year-old grandma. Says it's a summons from Travis County, but is actually asking for money for @tedcruz . Did your campaign authorize this? Is this even legal? Shame on you. That's one more @BetoORourke voter."

The image was retweeted over 34 thousand times as of Tuesday afternoon.

Received this for my 88-year-old grandma. Says it's a summons from Travis County, but is actually asking for money for @tedcruz . Did your campaign authorize this? Is this even legal? Shame on you. That's one more @BetoORourke voter. pic.twitter.com/NcFoOCvjFj — Sean Owen (@sean_r_owen) September 16, 2018

But the Cruz campaign denied in a statement that the mailer was misleading to voters.

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