Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| District | Incumbent | Party | First elected | Results | Candidates |
| --- | --- | --- | --- | --- | --- |
| Illinois 1 | Bobby Rush | Democratic | 1992.0 | Re-elected | Bobby Rush (D) 84.1% Jason Tabour (R) 15.9% |
| Illinois 3 | Dan Lipinski | Democratic | 2004.0 | Re-elected | Dan Lipinski (D) 77.1% Ray Wardingly (R) 22.9% |
| Illinois 4 | Luis Gutierrez | Democratic | 1992.0 | Re-elected | Luis Gutierrez (D) 85.8% Ann Melichar (R) 14.2% |
| Illinois 5 | Rahm Emanuel | Democratic | 2002.0 | Re-elected | Rahm Emanuel (D) 78.0% Kevin White (R) 22.0% |
| Illinois 6 | Henry Hyde | Republican | 1974.0 | Retired Republican hold | Peter Roskam (R) 51.4% Tammy Duckworth (D) 48.6% |
| Illinois 7 | Danny Davis | Democratic | 1996.0 | Re-elected | Danny Davis (D) 86.7% Charles Hutchinson (R) 13.3% |
| Illinois 9 | Jan Schakowsky | Democratic | 1998.0 | Re-elected | Jan Schakowsky (D) 74.6% Michael Shannon (R) 25.4% |
| Illinois 10 | Mark Kirk | Republican | 2000.0 | Re-elected | Mark Kirk (R) 53.4% Daniel Seals (D) 46.6% |
| Illinois 11 | Jerry Weller | Republican | 1994.0 | Re-elected | Jerry Weller (R) 55.1% John Pavich (D) 44.9% |
| Illinois 12 | Jerry Costello | Democratic | 1988.0 | Re-elected | Jerry Costello (D) unopposed |
| Illinois 13 | Judy Biggert | Republican | 1998.0 | Re-elected | Judy Biggert (R) 58.3% Joseph Shannon (D) 41.7% |
| Illinois 14 | Dennis Hastert | Republican | 1986.0 | Re-elected | Dennis Hastert (R) 59.8% John Laesch (D) 40.2% |
| Illinois 15 | Tim Johnson | Republican | 2000.0 | Re-elected | Tim Johnson (R) 57.6% David Gill (D) 42.4% |
| Illinois 17 | Lane Evans | Democratic | 1982.0 | Retired Democratic hold | Phil Hare (D) 57.2% Andrea Lane Zinga (R) 42.8% |
| Illinois 18 | Ray LaHood | Republican | 1994.0 | Re-elected | Ray LaHood (R) 67.3% Steve Waterworth (D) 32.7% |
Question:
Who were the candidates when the first elected was a republican in 1998? 
Answer:
Judy Biggert (R) 58.3% Joseph Shannon (D) 41.7%