"We don't want someone who will get 98 percent of the vote. We want someone who will get 51 percent of the vote"

This quote by Ann Coulter recommends that the speaker is trying to find a candidate who can win a bulk of the vote, rather than one who will win by a landslide. This suggests that the speaker is searching for a prospect who can win a close election, rather than one who will win by a large margin. This might be translated as a desire for a prospect who can interest a wide variety of citizens, instead of just a few. It could also be interpreted as a desire for a candidate who can win in a competitive election, instead of one who will win by a big margin due to a lack of competitors. Ultimately, this quote suggests that the speaker is searching for a prospect who can win a close election, and who can interest a large range of citizens.