Many others in those states did not face a primary challenger.

He did not face a challenger in the general election.

The President, on the other hand, did not face a primary challenger this year.

For the first time since 1998, faced a Democratic challenger.

He faced a primary challenger, but won with over 70% of the vote.

Lewis did not face a Republican challenger in the primary election.

He is facing two challengers in the primary next month.

It is unlikely that she will face a major challenger in the Democratic primary.

If things are truly awful, he might even face a significant primary challenger.

Consequently, it is common that the candidate does not face a challenger.