According to this website they do:
Chicago Cubs fans are legendary for loving their team no matter what the scoreboard says, or how many consecutive days the home team trails the division leader. Kids who can’t get tickets wait for home run balls on Sheffield Avenue. And regardless of how many beers the bleacher bums consume, no one forgets the words to “Take Me Out to the Ball Game.”
Cubs fans are some of the most loyal in baseball.
But they’re no Texas Rangers fans, who flock to the Arlington ballpark through last place finishes and playoff runs alike. The Ranger faithful don’t care if the team trades away its best players or spends $252 million to sign an MVP-caliber batter like Alex Rodriguez. No team’s attendance is less tied to its on the field performance than the Rangers’, and nowhere else in the country do fans peel off at a slower rate when the club has thin years.
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