Because abortion issues are not an election driver in MD unless the politician in question makes it so (1).
I don't understand why you would expect one unresponsive, no-name challenger to beat an incumbent on the D14 team.
(1) There are three bills in the House right now that are anti-choice: 2 parental notification bills & one fetus=person bill. Taylor is not a co-sponsor on any of them.
If Taylor were standing at the corner of New Hampshire Ave and Rt 108 with an aborted fetus poster, well, then his pro-life position might become an election issue.
Finally: nobody's up-in-arms about these bills they're going nowhere, one way or another.