DeLay was known to "primary" Republicans who resisted his votes (i.e., to threaten to endorse and to support a Republican primary challenge to the disobedient representative), and, like many of his predecessors in Congress, used promises of future committee chairmanships to bargain for support among the rank-and-file members of the party. Employing a method known as "catch and release", DeLay allowed centrist or moderately conservative Republicans to take turns voting against controversial bills. If a representative said that a bill was unpopular in his district, then DeLay would ask him to vote for it only if his vote were necessary for passage; if his vote were not needed, then the representative would be able to vote against the party without reprisal, a practice which has been followed by other party leaders and whips from both sides of the aisle, Democrat and Republican, respectively, when in power.  In the 108th Congress, a preliminary Medicare vote passed 216-215, a vote on Head Start passed 217-216, a vote on school vouchers for Washington, D.C., passed 209-208, and "Fast track", usually called "trade promotion authority", passed by one vote as well. Both political supporters and opponents remarked on DeLay's ability to sway the votes of his party, a method DeLay described as "growing the vote". DeLay was noted for involving lobbyists in the process of passing House bills. One lobbyist said, "I've had members pull me aside and ask me to talk to another member of Congress about a bill or amendment, but I've never been asked to work on a bill--at least like they are asking us to whip bills now." His ability to raise money gave him additional influence. During the 2004 election cycle, DeLay's political action committee ARMPAC was one of the top contributors to Republican congressional candidates, contributing over $980,000 in total.  Partly as a result of DeLay's management abilities, the House Republican caucus under him displayed unprecedented, sustained party cohesion.  On September 30, 2004, the House Ethics Committee unanimously admonished DeLay because he "offered to endorse Representative [Nick] Smith's son in exchange for Representative Smith's vote in favor of the Medicare bill."

Answer this question "Did he have any other methods or tactics?" by extracting the answer from the text above.
Employing a method known as "catch and release", DeLay allowed centrist or moderately conservative Republicans to take turns voting against controversial bills.