Following their decision not to back Rep. Jim Jordan for speaker, Reps. Ken Buck of Colorado, Drew Ferguson of Georgia, and Don Bacon of Nebraska have reportedly received death threats and other types of harassment.

Buck's office has received four such threats, and Ferguson has stationed police at his home and his daughter's school.

Bacon's wife has been inundated with texts and emails urging her to convince her husband to support Jordan.

Some Republicans are calling for increased security measures, and the situation raises questions about the safety of lawmakers and their families.Since refusing to support Rep. Jim Jordan for speaker of the House, several Republican members of Congress have reportedly received death threats.

Iowa Rep. Mariannette Miller-Meeks revealed that she has received "credible death threats" and a flood of threatening calls in a lengthy statement. Other Republicans, such as California Rep. David Valadao and Ohio Rep. Anthony Gonzalez, have also said they have received threats for not backing Jordan.

The revelations of such violence underscore the tensions and divisions within the Republican Party.