Index: events/src/main/java/geniusweb/actions/Action.java
===================================================================
--- events/src/main/java/geniusweb/actions/Action.java	(revision 10)
+++ events/src/main/java/geniusweb/actions/Action.java	(revision 21)
@@ -16,5 +16,7 @@
 		@JsonSubTypes.Type(value = Accept.class),
 		@JsonSubTypes.Type(value = Comparison.class),
-		@JsonSubTypes.Type(value = ElicitComparison.class) })
+		@JsonSubTypes.Type(value = ElicitComparison.class),
+		@JsonSubTypes.Type(value = Vote.class),
+		@JsonSubTypes.Type(value = Votes.class) })
 public interface Action {
 	/**
Index: events/src/main/java/geniusweb/actions/Vote.java
===================================================================
--- events/src/main/java/geniusweb/actions/Vote.java	(revision 21)
+++ events/src/main/java/geniusweb/actions/Vote.java	(revision 21)
@@ -0,0 +1,75 @@
+package geniusweb.actions;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+import geniusweb.issuevalue.Bid;
+
+/**
+ * A vote is an indication by a party that it conditionally accepts a bid. It's
+ * then up to the protocol to determine the outcome.
+ */
+@JsonTypeName("vote")
+public class Vote extends ActionWithBid {
+	private final Integer minPower;
+
+	/**
+	 * @param id       the {@link PartyId} that does the action
+	 * @param bid      the bid that is voted on
+	 * @param minPower the minimum power this bid must get in order for the vote
+	 *                 to be valid. If power=1 for all participants (usually the
+	 *                 default) power can be interpreted as number of votes
+	 */
+	@JsonCreator
+	public Vote(@JsonProperty("actor") PartyId id, @JsonProperty("bid") Bid bid,
+			@JsonProperty("minPower") Integer minPower) {
+		super(id, bid);
+		this.minPower = minPower;
+		if (bid == null || minPower == null || minPower < 1) {
+			throw new IllegalArgumentException(
+					"Vote must have non-null bid and minVotes, and minVotes must be >=1");
+		}
+	}
+
+	/**
+	 * 
+	 * @return the minimum number of votes this bid must get in order for the
+	 *         vote to be valid.
+	 */
+	public Integer getMinPower() {
+		return minPower;
+	}
+
+	@Override
+	public String toString() {
+		return "Vote[" + getActor() + "," + getBid() + "," + minPower + "]";
+	}
+
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = super.hashCode();
+		result = prime * result
+				+ ((minPower == null) ? 0 : minPower.hashCode());
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (!super.equals(obj))
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		Vote other = (Vote) obj;
+		if (minPower == null) {
+			if (other.minPower != null)
+				return false;
+		} else if (!minPower.equals(other.minPower))
+			return false;
+		return true;
+	}
+
+}
Index: events/src/main/java/geniusweb/actions/Votes.java
===================================================================
--- events/src/main/java/geniusweb/actions/Votes.java	(revision 21)
+++ events/src/main/java/geniusweb/actions/Votes.java	(revision 21)
@@ -0,0 +1,121 @@
+package geniusweb.actions;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Optional;
+import java.util.stream.Collectors;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import geniusweb.issuevalue.Bid;
+
+/**
+ * Indicates that a party conditionally agrees with any of the {@link Vote}s
+ * provided.
+ */
+public class Votes extends AbstractAction {
+	private final List<Vote> votes;
+
+	/**
+	 * 
+	 * @param id    party id
+	 * @param votes the {@link Vote}s that the party can agree on, if the
+	 *              condition of the Vote holds. There can be at most 1
+	 *              {@link Vote} for each bid.
+	 */
+	@JsonCreator
+	public Votes(@JsonProperty("actor") PartyId id,
+			@JsonProperty("votes") List<Vote> votes) {
+		super(id);
+		this.votes = votes;
+		if (votes == null)
+			throw new NullPointerException("votes must be not null");
+		for (Vote vote : votes) {
+			if (!vote.getActor().equals(id)) {
+				throw new IllegalArgumentException("All votes must come from "
+						+ id + " but found " + vote);
+			}
+		}
+		Map<Bid, Long> counts = votes.stream().map(vote -> vote.getBid())
+				.collect(Collectors.groupingBy(bid -> bid,
+						Collectors.counting()));
+		Optional<Entry<Bid, Long>> nonunique = counts.entrySet().stream()
+				.filter(entry -> entry.getValue() > 1).findAny();
+		if (nonunique.isPresent())
+			throw new IllegalArgumentException(
+					"Votes contains multiple Vote's for "
+							+ nonunique.get().getKey());
+
+	}
+
+	/**
+	 * Test if Votes extends other votes. Extending means that for each vote on
+	 * bid B with power P in othervotes, this contains also a vote for bid B
+	 * with power at most P.
+	 * 
+	 * @param otherVotes
+	 * @return true iff this extends the otherVotes.
+	 */
+	public boolean isExtending(Votes otherVotes) {
+		if (!otherVotes.getActor().equals(getActor()))
+			return false;
+		for (Vote vote : otherVotes.getVotes()) {
+			Vote myvote = getVote(vote.getBid());
+			if (myvote == null)
+				return false;
+			if (myvote.getMinPower() > vote.getMinPower())
+				return false;
+		}
+		return true;
+	}
+
+	/**
+	 * 
+	 * @param bid the bid that we may have a vote for
+	 * @return myvote for bid, or null if no vote for that bid;
+	 */
+	public Vote getVote(Bid bid) {
+		for (Vote vote : votes) {
+			if (vote.getBid().equals(bid))
+				return vote;
+		}
+		return null;
+	}
+
+	public List<Vote> getVotes() {
+		return Collections.unmodifiableList(votes);
+	}
+
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = super.hashCode();
+		result = prime * result + ((votes == null) ? 0 : votes.hashCode());
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (!super.equals(obj))
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		Votes other = (Votes) obj;
+		if (votes == null) {
+			if (other.votes != null)
+				return false;
+		} else if (!votes.equals(other.votes))
+			return false;
+		return true;
+	}
+
+	@Override
+	public String toString() {
+		return "Votes[" + getActor() + "," + votes + "]";
+	}
+}
