But the Republican will represent the western suburbs for now. Nybo's replacing Kirk Dillard, who stepped down as a Senator to chair the Chicago area's mass transportation agency, known as the RTA.
It's one of several changes in the makeup of Illinois' legislature of late. The House got two new members in July, when two longtime representatives, an Antioch Republican and a Democrat from Rockford, retired.
That's on top of three other changeovers, all in the House, earlier in the two-year-legislative session. There could be more pre-election seat swaps to come before this fall's election.
Illinois' constitution bans anyone convicted of a felony or bribery from holding state office, and Democratic Rep. Derrick Smith of Chicago was found guilty of bribery. But Smith is still getting a legislative paycheck. Though the jury's verdict came down in June, legal proceedings, like his sentencing, aren't over yet.