​Just for fun, here are two predictions on how well Alexa will do on DWTS this season.

From Hollywood Take, September 2nd:

Then there are the wildcards among the DWTS Season 21 cast. It’s hard to predict how married couple Alexa and Carlos PenaVega (paired with Mark Ballas and Witney Carson, respectively) will perform in 2015.

Alexa showed potential in the Dancing promos, but she may not have that strong of a fanbase.

From Buddy TV, September 4th:

Carlos PenaVega and Witney Carson: Carlos is young, good-looking and from Big Time Rush, a band/TV show that required him to do choreography. Fellow BTR member James Maslow made it all of the way to fourth place in season 18 while Witney Carson won with Alfonso Ribeiro and dragged Bachelor Chris Soules to fifth place. If I were them, I'd already be planning my Freestyle.

Alexa PenaVega and Mark Ballas: Alexa, as an attractive actress and singer in her 20s, fits the mold of recently successful stars like Rumer Willis and Janel Parrish (making a bit odd she's not partnered with Val). She has everything you might look for in a winner, plus the added bonus of competing against her husband. After all, being the female half of a duo worked out very well for Meryl Davis.

Before the first dances even take place, I predict that Alexa PenaVega and Mark Ballas will win Dancing with the Stars season 21. She has the right look and build to go far and he's a fan favorite choreographer who proved last season that he can come up with inventive concepts.

One "wild card" and one "she'll win the whole thing." It's going to be very important for us fans to make sure we vote for Alexa every week to keep her in.