1994 Ajello was challenged in the September 13, 1994 Democratic Primary, but won, and was unopposed for the November 8, 1994 General election, winning with 1,243 votes.
1996 Ajello was unopposed for both the September 10, 1996 Democratic Primary, winning with 134 votes, and the November 5, 1996 General election with 1,428 votes.
1998 Ajello was challenged in the September 15, 1998 Democratic Primary, winning with 435 votes and won the November 3, 1998 General election with 1,409 votes against Independent candidate Peter Scharf.
2000 Ajello was unopposed for both the September 12, 2000 Democratic Primary, winning with 380 votes and the November 7, 2000 General election, winning with 1,980 votes.
2002 Ajello was unopposed for the September 10, 2002 Democratic Primary, winning with 1,548 votes and won the November 5, 2002 General election with 2,692 votes against Republican nominee Karl Poirier.
2004 Ajello was unopposed for the September 14, 2004 Democratic Primary, winning with 1,407 votes and won the November 2, 2004 General election with 3,241 votes against Republican nominee Daniel Harrop.
2006 Ajello was unopposed for both the September 12, 2006 Democratic Primary, winning with 969 votes, and the November 7, 2006 General election, winning with 3,104 votes.
2010 Ajello and returning 2004 Republican challenger Daniel Harrop were both unopposed for their September 23, 2010 primaries, setting up a rematch; Ajello won the November 2, 2010 General election with 2,215 votes against Harrop.
2012 Redistricted to District 1, and with incumbent Representative John McCauley retiring, Ajello was unopposed for the September 11, 2012 Democratic Primary, winning with 1,059 votes and won the November 6, 2012 General election with 2,890 votes against Independent candidate Francisco Gonzalez.
2014 Ajello faced Nathaniel Hannah in the September 9, 2014 Democratic Primary. She won the nomination with 1,392 votes. She then ran unopposed in the November 4, 2014 General election.
2016 Ajello was unopposed in the September 13, 2016 Democratic Primary. She defeated Independent Raymond M. Mathieu in the November 8, 2016 General election with 2,963 votes to Mathieu's 1,398 votes.
