On the first drive of the game the Mountain Hawks (4-2, 1-0 Patriot League) marched 67 yards on eight plays, resulting in a 14-yard pass from Lum to Spadola.
Lehigh then scored on a 9-yard run by Zach Barket after John Veniero recovered a Bison fumble to give the Mountain Hawks possession.
After a field goal, Lum and Spadola teamed up again for a 14-yard pass, giving Lehigh a 23-7 lead at halftime.
Alex Eckard kicked a 27-yard field goal to pull Bucknell (1-6, 1-1) within 23-10 in the third quarter, but Lum and Spadola scored their third touchdown, for 32 yards, to pull away.
Lum was 19-for-33 with 269 yards and Spadola had 111 yards on six catches in Lehigh's 13th straight win over Bucknell.
Less than four months removed from his transfer to Florida State, Everett Golson has been named the Seminoles' starting quarterback.
After hinting at it for more than a week, LSU coach Les Miles confirmed Monday that Brandon Harris will start at quarterback in Saturday's opener against McNeese State.
USC AD Pat Haden said he had "thoughtful conversations" with medical professionals and that "a lot of careful thought was given" before deciding on a course of action for coach Steve Sarkisian.
A final decision in Ohio State's quarterback derby won't be revealed until just before the season kicks off, but Urban Meyer isn't ruling out playing both his decorated candidates.
With less than a week to go before the season opener, No. 9 Georgia finally has a starting quarterback. Coach Mark Richt announced Monday that Greyson Lambert had won the starting job.
Sales of beer with Joe Paterno's name on it are so brisk that the company that makes it is gearing up for a second run after just a week on the shelves.