Randall Stufflebeam of the Illinois Constitution Party appears to have no challenges to his petitions to be placed on the ballot for US Senate. He had only 34,000 signatures with a needed 25,000 signatures meaning it was pretty unlikely he would survive a challenge. If this works as it seems to be working out, Mark Kirk’s people made a major mistake in not knocking him off the ballot.
The reason it is so important is that Stufflebeam is pro-life and given a pro-life alternative on the ballot, many conservatives may vote for him over Kirk. While third party effects are usually exaggerated, the pro-life community has a rather extensive network to push out his name for the general election. Compare this to the Green Candidate who might pick up some African-American votes hurting Giannoulias, but has little organization to do so.